ASoC: samsung: tm2_wm5110: Convert to SPDX License Identifier

Replace 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/tm2_wm5110.c

-/*
- * Copyright (C) 2015 - 2016 Samsung Electronics Co., Ltd.
- *
- * Authors: Inha Song <ideal.song@samsung.com>
- *          Sylwester Nawrocki <s.nawrocki@samsung.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, or (at your
- * option) any later version.
- */
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Copyright (C) 2015 - 2016 Samsung Electronics Co., Ltd.
+//
+// Authors: Inha Song <ideal.song@samsung.com>
+//          Sylwester Nawrocki <s.nawrocki@samsung.com>
 
 #include <linux/clk.h>
 #include <linux/gpio.h>