crypto: atmel - switch to SPDX license identifiers

Adopt the SPDX license identifiers to ease license compliance
management.

Signed-off-by: Tudor Ambarus <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

drivers/crypto/atmel-aes.c

···
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Cryptographic API.
  *
···
  *
  * Copyright (c) 2012 Eukréa Electromatique - ATMEL
  * Author: Nicolas Royer <[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.
  *
  * Some ideas are from omap-aes.c driver.
  */

drivers/crypto/atmel-authenc.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * API for Atmel Secure Protocol Layers Improved Performances (SPLIP)
  *
  * Copyright (C) 2016 Atmel Corporation
  *
  * Author: Cyrille Pitchen <[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.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  * This driver is based on drivers/mtd/spi-nor/fsl-quadspi.c from Freescale.
  */

drivers/crypto/atmel-ecc.c

···
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Microchip / Atmel ECC (I2C) driver.
  *
  * Copyright (c) 2017, Microchip Technology Inc.
  * Author: Tudor Ambarus <[e-mail]>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
  */
 
 #include <linux/bitrev.h>

drivers/crypto/atmel-ecc.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (c) 2017, Microchip Technology Inc.
  * Author: Tudor Ambarus <[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.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program.  If not, see <http://www.gnu.org/licenses/>.
- *
  */
 
 #ifndef __ATMEL_ECC_H__

drivers/crypto/atmel-sha.c

···
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Cryptographic API.
  *
···
  *
  * Copyright (c) 2012 Eukréa Electromatique - ATMEL
  * Author: Nicolas Royer <[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.
  *
  * Some ideas are from omap-sham.c drivers.
  */

drivers/crypto/atmel-tdes.c

···
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Cryptographic API.
  *
···
  *
  * Copyright (c) 2012 Eukréa Electromatique - ATMEL
  * Author: Nicolas Royer <[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.
  *
  * Some ideas are from omap-aes.c drivers.
  */