Redirect checkpatch.sh to ../optee_os

use the checkpatch-helper scripts from optee_os repo

Signed-off-by: Markus S. Wamser <markus.wamser@mixed-mode.de>
Acked-by: Jerome Forissier <jerome@forissier.org>
diff --git a/scripts/checkpatch.sh b/scripts/checkpatch.sh
new file mode 100644
index 0000000..505706d
--- /dev/null
+++ b/scripts/checkpatch.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+if [ -z "$OPTEE_OS_PATH" ]; then
+   OPTEE_OS_PATH="../optee_os";
+fi
+
+source $OPTEE_OS_PATH/scripts/checkpatch.sh "$@"