Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h
index 3f4bf60..9e409bb 100644
--- a/include/linux/input/mt.h
+++ b/include/linux/input/mt.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 #ifndef _INPUT_MT_H
 #define _INPUT_MT_H
 
@@ -5,10 +6,6 @@
  * Input Multitouch Library
  *
  * Copyright (c) 2010 Henrik Rydberg
- *
- * 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 <linux/input.h>