Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/video/of_videomode.c b/drivers/video/of_videomode.c
index 9b5f9de..67aff24 100644
--- a/drivers/video/of_videomode.c
+++ b/drivers/video/of_videomode.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * generic videomode helper
  *
  * Copyright (c) 2012 Steffen Trumtrar <s.trumtrar@pengutronix.de>, Pengutronix
- *
- * This file is released under the GPLv2
  */
 #include <linux/errno.h>
 #include <linux/export.h>