Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/sh/boards/mach-landisk/setup.c b/arch/sh/boards/mach-landisk/setup.c
index f1147ca..16b4d8b 100644
--- a/arch/sh/boards/mach-landisk/setup.c
+++ b/arch/sh/boards/mach-landisk/setup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/landisk/setup.c
  *
@@ -7,10 +8,6 @@
  * Copyright (C) 2002 Paul Mundt
  * Copylight (C) 2002 Atom Create Engineering Co., Ltd.
  * Copyright (C) 2005-2007 kogiidena
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/platform_device.h>