ARM: dts: s3c24xx: Add SPDX license identifiers

Replace GPL v2.0 license statements with SPDX license identifiers.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/boot/dts/s3c2416-pinctrl.dtsi

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Samsung S3C2416 pinctrl settings
  *
  * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
- *
- * 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 <dt-bindings/pinctrl/samsung.h>

arch/arm/boot/dts/s3c2416-smdk2416.dts

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SAMSUNG SMDK2416 board device tree source
  *
  * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
- *
- * 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.
  */
 
 /dts-v1/;

arch/arm/boot/dts/s3c2416.dtsi

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Samsung's S3C2416 SoC device tree source
  *
  * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
- *
- * 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 <dt-bindings/clock/s3c2443.h>

arch/arm/boot/dts/s3c24xx.dtsi

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Samsung's S3C24XX family device tree source
  *
  * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
- *
- * 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 "skeleton.dtsi"