Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S
index 293dcc2..1ac0fbb 100644
--- a/arch/arm/mm/proc-xsc3.S
+++ b/arch/arm/mm/proc-xsc3.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * linux/arch/arm/mm/proc-xsc3.S
  *
@@ -7,10 +8,6 @@
  * Copyright 2004 (C) Intel Corp.
  * Copyright 2005 (C) MontaVista Software, Inc.
  *
- * 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.
- *
  * MMU functions for the Intel XScale3 Core (XSC3).  The XSC3 core is
  * an extension to Intel's original XScale core that adds the following
  * features: