Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/powerpc/tools/checkpatch.sh b/arch/powerpc/tools/checkpatch.sh
index 1fad3fb..3ce5c09 100755
--- a/arch/powerpc/tools/checkpatch.sh
+++ b/arch/powerpc/tools/checkpatch.sh
@@ -19,4 +19,5 @@
 	--ignore GLOBAL_INITIALISERS \
 	--ignore LINE_SPACING \
 	--ignore MULTIPLE_ASSIGNMENTS \
+	--ignore DT_SPLIT_BINDING_PATCH \
 	$@
diff --git a/arch/powerpc/tools/relocs_check.sh b/arch/powerpc/tools/relocs_check.sh
index ec2d5c8..2b4e959 100755
--- a/arch/powerpc/tools/relocs_check.sh
+++ b/arch/powerpc/tools/relocs_check.sh
@@ -1,11 +1,8 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Copyright © 2015 IBM Corporation
 
-# 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, or (at your option) any later version.
 
 # This script checks the relocations of a vmlinux for "suspicious"
 # relocations.