Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/net/dccp/options.c b/net/dccp/options.c
index 4e40db0..3b42f5c 100644
--- a/net/dccp/options.c
+++ b/net/dccp/options.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *  net/dccp/options.c
  *
@@ -5,11 +6,6 @@
  *  Copyright (c) 2005 Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org>
  *  Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
  *  Copyright (c) 2005 Ian McDonald <ian.mcdonald@jandi.co.nz>
- *
- *      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/dccp.h>
 #include <linux/module.h>