i2c: use SPDX identifier for Renesas drivers

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-emev2.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * I2C driver for the Renesas EMEV2 SoC
  *
  * Copyright (C) 2015 Wolfram Sang <wsa@sang-engineering.com>
  * Copyright 2013 Codethink Ltd.
  * Copyright 2010-2015 Renesas Electronics Corporation
- *
- * 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.
  */
 
 #include <linux/clk.h>

drivers/i2c/busses/i2c-highlander.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Solutions Highlander FPGA I2C/SMBus support.
  *
@@ -6,10 +7,6 @@
  * Copyright (C) 2008  Paul Mundt
  * Copyright (C) 2008  Renesas Solutions Corp.
  * Copyright (C) 2008  Atom Create Engineering Co., Ltd.
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License version 2. See the file "COPYING" in the main directory
- * of this archive for more details.
  */
 #include <linux/module.h>
 #include <linux/interrupt.h>

drivers/i2c/busses/i2c-rcar.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Driver for the Renesas R-Car I2C unit
  *
@@ -9,15 +10,6 @@
  *
  * This file is based on the drivers/i2c/busses/i2c-sh7760.c
  * (c) 2005-2008 MSC Vertriebsges.m.b.H, Manuel Lauss <mlau@msc-ge.com>
- *
- * 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; version 2 of the License.
- *
- * 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/bitops.h>
 #include <linux/clk.h>

drivers/i2c/busses/i2c-riic.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas RIIC driver
  *
  * Copyright (C) 2013 Wolfram Sang <wsa@sang-engineering.com>
  * Copyright (C) 2013 Renesas Solutions Corp.
- *
- * 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.
  */
 
 /*

drivers/i2c/busses/i2c-sh_mobile.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SuperH Mobile I2C Controller
  *
@@ -7,15 +8,6 @@
  *
  * Portions of the code based on out-of-tree driver i2c-sh7343.c
  * Copyright (c) 2006 Carlos Munoz <carlos@kenati.com>
- *
- * 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
- *
- * 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/clk.h>