Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/net/usb/sr9700.h b/drivers/net/usb/sr9700.h
index 258b030..ea2b4de 100644
--- a/drivers/net/usb/sr9700.h
+++ b/drivers/net/usb/sr9700.h
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * CoreChip-sz SR9700 one chip USB 1.1 Ethernet Devices
  *
  * Author : Liu Junliang <liujunliang_ljl@163.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 _SR9700_H