Add u-boot-config to the list of TAB_OK projects.

BUG=none
TEST=Tried uploading something from u-boot-config.

Change-Id: I944dd9915e55a440c477835c8047cf805542c3c4
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: http://gerrit.chromium.org/gerrit/564
Reviewed-by: Ryan Cui <rcui@chromium.org>
diff --git a/pre-upload.py b/pre-upload.py
index eb95d70..a83ff7c 100644
--- a/pre-upload.py
+++ b/pre-upload.py
@@ -212,6 +212,7 @@
 def _check_no_tabs(project, commit):
   """Checks there are no unexpanded tabs."""
   TAB_OK_PATHS = [
+      r"/src/platform/u-boot-config/",
       r"/src/third_party/u-boot/",
       r"/src/third_party/u-boot-next/",
       r".*\.ebuild$",