drm: rcar-du: Convert to SPDX identifiers

Kconfig doesn't have license line, thus, it is GPL-2.0 as default.
rcar_du_regs.h, rcar_lvds_regs.h are GPL-2.0,
and all other files are GPL-2.0+ as original license.

Signed-off-by: Kuninori Morimoto <[e-mail]>
Acked-by: Laurent Pinchart <[e-mail]>
Reviewed-by: Simon Horman <[e-mail]>
Signed-off-by: Laurent Pinchart <[e-mail]>

drivers/gpu/drm/rcar-du/Kconfig

···
+# SPDX-License-Identifier: GPL-2.0
 config DRM_RCAR_DU
 	tristate "DRM Support for R-Car Display Unit"
 	depends on DRM && OF

drivers/gpu/drm/rcar-du/rcar_du_crtc.c

···
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * rcar_du_crtc.c  --  R-Car Display Unit CRTCs
  *
  * Copyright (C) 2013-2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/clk.h>

drivers/gpu/drm/rcar-du/rcar_du_crtc.h

···
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * rcar_du_crtc.h  --  R-Car Display Unit CRTCs
  *
  * Copyright (C) 2013-2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #ifndef __RCAR_DU_CRTC_H__

drivers/gpu/drm/rcar-du/rcar_du_drv.c

···
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * rcar_du_drv.c  --  R-Car Display Unit DRM driver
  *
  * Copyright (C) 2013-2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/clk.h>

drivers/gpu/drm/rcar-du/rcar_du_drv.h

···
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * rcar_du_drv.h  --  R-Car Display Unit DRM driver
  *
  * Copyright (C) 2013-2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #ifndef __RCAR_DU_DRV_H__

drivers/gpu/drm/rcar-du/rcar_du_encoder.c

···
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * rcar_du_encoder.c  --  R-Car Display Unit Encoder
  *
  * Copyright (C) 2013-2014 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/export.h>

drivers/gpu/drm/rcar-du/rcar_du_encoder.h

···
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * rcar_du_encoder.h  --  R-Car Display Unit Encoder
  *
  * Copyright (C) 2013-2014 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #ifndef __RCAR_DU_ENCODER_H__

drivers/gpu/drm/rcar-du/rcar_du_group.c

···
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * rcar_du_group.c  --  R-Car Display Unit Channels Pair
  *
  * Copyright (C) 2013-2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 /*

drivers/gpu/drm/rcar-du/rcar_du_group.h

···
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * rcar_du_group.c  --  R-Car Display Unit Planes and CRTCs Group
  *
  * Copyright (C) 2013-2014 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #ifndef __RCAR_DU_GROUP_H__

drivers/gpu/drm/rcar-du/rcar_du_kms.c

···
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * rcar_du_kms.c  --  R-Car Display Unit Mode Setting
  *
  * Copyright (C) 2013-2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <drm/drmP.h>

drivers/gpu/drm/rcar-du/rcar_du_kms.h

···
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * rcar_du_kms.h  --  R-Car Display Unit Mode Setting
  *
  * Copyright (C) 2013-2014 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #ifndef __RCAR_DU_KMS_H__

drivers/gpu/drm/rcar-du/rcar_du_plane.c

···
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * rcar_du_plane.c  --  R-Car Display Unit Planes
  *
  * Copyright (C) 2013-2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <drm/drmP.h>

drivers/gpu/drm/rcar-du/rcar_du_plane.h

···
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * rcar_du_plane.h  --  R-Car Display Unit Planes
  *
  * Copyright (C) 2013-2014 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #ifndef __RCAR_DU_PLANE_H__

drivers/gpu/drm/rcar-du/rcar_du_regs.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * rcar_du_regs.h  --  R-Car Display Unit Registers Definitions
  *
  * Copyright (C) 2013-2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
  */
 
 #ifndef __RCAR_DU_REGS_H__

drivers/gpu/drm/rcar-du/rcar_du_vsp.c

···
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * rcar_du_vsp.h  --  R-Car Display Unit VSP-Based Compositor
  *
  * Copyright (C) 2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <drm/drmP.h>

drivers/gpu/drm/rcar-du/rcar_du_vsp.h

···
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * rcar_du_vsp.h  --  R-Car Display Unit VSP-Based Compositor
  *
  * Copyright (C) 2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #ifndef __RCAR_DU_VSP_H__

drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c

···
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * R-Car Gen3 HDMI PHY
  *
  * Copyright (C) 2016 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/module.h>

drivers/gpu/drm/rcar-du/rcar_lvds_regs.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * rcar_lvds_regs.h  --  R-Car LVDS Interface Registers Definitions
  *
  * Copyright (C) 2013-2015 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart ([e-mail])
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
  */
 
 #ifndef __RCAR_LVDS_REGS_H__