ASoC: samsung: i2s: Convert to SPDX License Identifier

Replace remaining GPL v2.0 license statements with SPDX license
identifier.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/samsung/i2s-regs.h

+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
- * linux/sound/soc/samsung/i2s-regs.h
- *
  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
  *		http://www.samsung.com
  *
  * Samsung I2S driver's register header
- *
- * 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, or (at your
- * option) any later version.
  */
 
 #ifndef __SND_SOC_SAMSUNG_I2S_REGS_H

sound/soc/samsung/i2s.h

-/* sound/soc/samsung/i2s.h
- *
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
  * ALSA SoC Audio Layer - Samsung I2S Controller driver
  *
  * Copyright (c) 2010 Samsung Electronics Co. Ltd.
  *	Jaswinder Singh <jassisinghbrar@gmail.com>
- *
- * 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.
  */
 
 #ifndef __SND_SOC_SAMSUNG_I2S_H