Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/mfd/wm8350-regmap.c b/drivers/mfd/wm8350-regmap.c
index 9efc647..5663b8b 100644
--- a/drivers/mfd/wm8350-regmap.c
+++ b/drivers/mfd/wm8350-regmap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * wm8350-regmap.c  --  Wolfson Microelectronics WM8350 register map
  *
@@ -5,11 +6,6 @@
  * status of the WM8350 registers since they are rather large.
  *
  * Copyright 2007, 2008 Wolfson Microelectronics PLC.
- *
- *  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.
  */
 
 #include <linux/mfd/wm8350/core.h>