Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index f91e381..9c3b27c 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 #ifndef _DCCP_H
 #define _DCCP_H
 /*
@@ -6,10 +7,6 @@
  *  An implementation of the DCCP protocol
  *  Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
  *  Copyright (c) 2005-6 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 version 2 as
- *	published by the Free Software Foundation.
  */
 
 #include <linux/dccp.h>