Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/powerpc/boot/mvme5100.c b/arch/powerpc/boot/mvme5100.c
index cb865f8..51453d0 100644
--- a/arch/powerpc/boot/mvme5100.c
+++ b/arch/powerpc/boot/mvme5100.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Motorola/Emerson MVME5100 with PPCBug firmware.
  *
  * Author: Stephen Chivers <schivers@csc.com>
  *
  * Copyright 2013 CSC Australia Pty. Ltd.
- *
- * 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 "types.h"
 #include "ops.h"