patman: Avoid importing gitutil in settings

Pass this module in so that settings does not need to import it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Stefan Bosch <stefan_b@posteo.net>
diff --git a/tools/patman/main.py b/tools/patman/main.py
index 0974c84..0df2aa5 100755
--- a/tools/patman/main.py
+++ b/tools/patman/main.py
@@ -80,7 +80,7 @@
 # Parse options twice: first to get the project and second to handle
 # defaults properly (which depends on project).
 (options, args) = parser.parse_args()
-settings.Setup(parser, options.project, '')
+settings.Setup(gitutil, parser, options.project, '')
 (options, args) = parser.parse_args()
 
 if __name__ != "__main__":