Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/tfrc.h b/include/linux/tfrc.h
index 8a8462b..a5acc76 100644
--- a/include/linux/tfrc.h
+++ b/include/linux/tfrc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #ifndef _LINUX_TFRC_H_
 #define _LINUX_TFRC_H_
 /*
@@ -8,11 +9,6 @@
  *  Copyright (c) 2005 Ian McDonald <iam4@cs.waikato.ac.nz>
  *  Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
  *  Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
  */
 #include <linux/types.h>