Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
index c73776b..8a55b69 100644
--- a/arch/arm/mach-omap2/pm.h
+++ b/arch/arm/mach-omap2/pm.h
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * OMAP2/3 Power Management Routines
  *
  * Copyright (C) 2008 Nokia Corporation
  * Jouni Hogander
- *
- * 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 __ARCH_ARM_MACH_OMAP2_PM_H
 #define __ARCH_ARM_MACH_OMAP2_PM_H