treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 78

Based on 1 normalized pattern(s):

this work is licensed under the terms of the gnu gpl version 2 or
later see the copying file in the top level directory

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 6 file(s).

Signed-off-by: Thomas Gleixner <[e-mail]>
Reviewed-by: Allison Randal <[e-mail]>
Reviewed-by: Richard Fontana <[e-mail]>
Cc: [e-mail]
Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/scsi/virtio_scsi.c

···
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Virtio SCSI HBA driver
  *
···
  * Authors:
  *  Stefan Hajnoczi   <[e-mail]>
  *  Paolo Bonzini   <[e-mail]>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

drivers/virtio/virtio_mmio.c

···
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Virtio memory mapped device driver
  *
···
  *		virtio_mmio.device=0x100@0x100b0000:48 \
  *				virtio_mmio.device=1K@0x1001e000:74
  *
- *
- *
  * Based on Virtio PCI driver by Anthony Liguori, copyright IBM Corp. 2007
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
  */
 
 #define pr_fmt(fmt) "virtio-mmio: " fmt

drivers/virtio/virtio_pci_common.c

···
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Virtio PCI driver - common functionality for all device versions
  *
···
  *  Anthony Liguori  <[e-mail]>
  *  Rusty Russell <[e-mail]>
  *  Michael S. Tsirkin <[e-mail]>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
  */
 
 #include "virtio_pci_common.h"

drivers/virtio/virtio_pci_common.h

···
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #ifndef _DRIVERS_VIRTIO_VIRTIO_PCI_COMMON_H
 #define _DRIVERS_VIRTIO_VIRTIO_PCI_COMMON_H
 /*
···
  *  Anthony Liguori  <[e-mail]>
  *  Rusty Russell <[e-mail]>
  *  Michael S. Tsirkin <[e-mail]>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
  */
 
 #include <linux/module.h>

drivers/virtio/virtio_pci_legacy.c

···
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Virtio PCI driver - legacy device support
  *
···
  *  Anthony Liguori  <[e-mail]>
  *  Rusty Russell <[e-mail]>
  *  Michael S. Tsirkin <[e-mail]>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
  */
 
 #include "virtio_pci_common.h"

drivers/virtio/virtio_pci_modern.c

···
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Virtio PCI driver - modern (virtio 1.0) device support
  *
···
  *  Anthony Liguori  <[e-mail]>
  *  Rusty Russell <[e-mail]>
  *  Michael S. Tsirkin <[e-mail]>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
  */
 
 #include <linux/delay.h>