Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/iio/accel/mma7455.h b/drivers/iio/accel/mma7455.h
index 2b1152c..4e3fa98 100644
--- a/drivers/iio/accel/mma7455.h
+++ b/drivers/iio/accel/mma7455.h
@@ -1,10 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * IIO accel driver for Freescale MMA7455L 3-axis 10-bit accelerometer
  * Copyright 2015 Joachim Eastwood <manabian@gmail.com>
- *
- * 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.
  */
 
 #ifndef __MMA7455_H