Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/resource_ext.h b/include/linux/resource_ext.h
index e2bf63d..06da59b 100644
--- a/include/linux/resource_ext.h
+++ b/include/linux/resource_ext.h
@@ -1,15 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (C) 2015, Intel Corporation
  * Author: Jiang Liu <jiang.liu@linux.intel.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 #ifndef _LINUX_RESOURCE_EXT_H
 #define _LINUX_RESOURCE_EXT_H