Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/security/apparmor/include/label.h b/security/apparmor/include/label.h
index 7ce5fe7..47942c4 100644
--- a/security/apparmor/include/label.h
+++ b/security/apparmor/include/label.h
@@ -1,14 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * AppArmor security module
  *
  * This file contains AppArmor label definitions
  *
  * Copyright 2017 Canonical Ltd.
- *
- * 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, version 2 of the
- * License.
  */
 
 #ifndef __AA_LABEL_H