treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_160.RULE

Based on the normalized pattern:

    the code contained herein is licensed under the gnu general public
    license you may obtain a copy of the gnu general public license
    version 2 at the following locations:  http://www opensource
    org/licenses/gpl-license html http://www gnu org/copyleft/gpl html

extracted by the scancode license scanner the SPDX license identifier

    GPL-2.0-only

has been chosen to replace the boilerplate/reference.

Reviewed-by: Allison Randal <allison@lohutok.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/arm/boot/dts/imx23-pinfunc.h

@@ -1,14 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Header providing constants for i.MX23 pinctrl bindings.
  *
  * Copyright (C) 2013 Lothar Waßmann <LW@KARO-electronics.de>
- *
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
  */
 
 #ifndef __DT_BINDINGS_MX23_PINCTRL_H__

arch/arm/boot/dts/imx28-pinfunc.h

@@ -1,14 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Header providing constants for i.MX28 pinctrl bindings.
  *
  * Copyright (C) 2013 Lothar Waßmann <LW@KARO-electronics.de>
- *
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
  */
 
 #ifndef __DT_BINDINGS_MX28_PINCTRL_H__

arch/arm/boot/dts/mxs-pinfunc.h

@@ -1,14 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Header providing constants for i.MX28 pinctrl bindings.
  *
  * Copyright (C) 2013 Lothar Waßmann <LW@KARO-electronics.de>
- *
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
  */
 
 #ifndef __DT_BINDINGS_MXS_PINCTRL_H__