Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/mm/cache-fa.S b/arch/arm/mm/cache-fa.S
index 2f0c588..3a464d1 100644
--- a/arch/arm/mm/cache-fa.S
+++ b/arch/arm/mm/cache-fa.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *  linux/arch/arm/mm/cache-fa.S
  *
@@ -7,10 +8,6 @@
  * Based on cache-v4wb.S:
  *  Copyright (C) 1997-2002 Russell king
  *
- * 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.
- *
  *  Processors: FA520 FA526 FA626	
  */
 #include <linux/linkage.h>