Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/fs/compat.c b/fs/compat.c
index 4a0aaaf..436d228 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/compat.c
  *
@@ -9,10 +10,6 @@
  *  Copyright (C) 1998       Eddie C. Dost  (ecd@skynet.be)
  *  Copyright (C) 2001,2002  Andi Kleen, SuSE Labs 
  *  Copyright (C) 2003       Pavel Machek (pavel@ucw.cz)
- *
- *  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 <linux/compat.h>