Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/if_pppol2tp.h b/include/linux/if_pppol2tp.h
index 0fb71e5..96d4094 100644
--- a/include/linux/if_pppol2tp.h
+++ b/include/linux/if_pppol2tp.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /***************************************************************************
  * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661)
  *
@@ -5,11 +6,6 @@
  * (l2tp_ppp.c).  All version information wrt this file is located in l2tp_ppp.c
  *
  * License:
- *		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.
- *
  */
 #ifndef __LINUX_IF_PPPOL2TP_H
 #define __LINUX_IF_PPPOL2TP_H