Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/scripts/spdxcheck-test.sh b/scripts/spdxcheck-test.sh
new file mode 100644
index 0000000..cfea6a0
--- /dev/null
+++ b/scripts/spdxcheck-test.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+for PYTHON in python2 python3; do
+	# run check on a text and a binary file
+	for FILE in Makefile Documentation/logo.gif; do
+		$PYTHON scripts/spdxcheck.py $FILE
+		$PYTHON scripts/spdxcheck.py - < $FILE
+	done
+
+	# run check on complete tree to catch any other issues
+	$PYTHON scripts/spdxcheck.py > /dev/null
+done