disable CrOS licensing checks

This is a 3rd party forked project, so we don't want to enforce the
CrOS licensing in here.

TEST=repo upload no longer complains

Change-Id: I9d35a2204736b5165704c2dcba5c1f1b89feb457
Reviewed-on: https://chromium-review.googlesource.com/1075473
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Luis Hector Chavez <lhchavez@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
diff --git a/PRESUBMIT.cfg b/PRESUBMIT.cfg
new file mode 100644
index 0000000..f2d8f02
--- /dev/null
+++ b/PRESUBMIT.cfg
@@ -0,0 +1,2 @@
+[Hook Overrides]
+cros_license_check: false