Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/clock_cooling.h b/include/linux/clock_cooling.h
index 4d1019d..b5cebf7 100644
--- a/include/linux/clock_cooling.h
+++ b/include/linux/clock_cooling.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *  linux/include/linux/clock_cooling.h
  *
@@ -9,15 +10,6 @@
  *  Highly based on cpu_cooling.c.
  *  Copyright (C) 2012	Samsung Electronics Co., Ltd(http://www.samsung.com)
  *  Copyright (C) 2012  Amit Daniel <amit.kachhap@linaro.org>
- *
- *  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.
  */
 
 #ifndef __CPU_COOLING_H__