Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/ide/cs5535.c b/drivers/ide/cs5535.c
index 3bc5b9a..70fdbe3 100644
--- a/drivers/ide/cs5535.c
+++ b/drivers/ide/cs5535.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2004-2005 Advanced Micro Devices, Inc.
  * Copyright (C)      2007 Bartlomiej Zolnierkiewicz
@@ -14,10 +15,6 @@
  * Development of this chipset driver was funded
  * by the nice folks at National Semiconductor/AMD.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
  * Documentation:
  *  CS5535 documentation available from AMD
  */