Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/net/802/fddi.c b/net/802/fddi.c
index 90f1416..7533ce2 100644
--- a/net/802/fddi.c
+++ b/net/802/fddi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * INET		An implementation of the TCP/IP protocol suite for the LINUX
  *		operating system.  INET is implemented using the BSD Socket
@@ -16,11 +17,6 @@
  *			Florian La Roche, <rzsfl@rz.uni-sb.de>
  *			Alan Cox, <gw4pts@gw4pts.ampr.org>
  *
- *		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.
- *
  *	Changes
  *		Alan Cox		:	New arp/rebuild header
  *		Maciej W. Rozycki	:	IPv6 support