Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/mtd/pismo.h b/include/linux/mtd/pismo.h
index 8dfb7e1..085b639 100644
--- a/include/linux/mtd/pismo.h
+++ b/include/linux/mtd/pismo.h
@@ -1,9 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * PISMO memory driver - http://www.pismoworld.org/
- *
- * 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.
  */
 #ifndef __LINUX_MTD_PISMO_H
 #define __LINUX_MTD_PISMO_H