Add PRESUBMIT.cfg to check the right license header.

BUG=None
TEST=repo upload . --cbr

Change-Id: I7f2c7d3ae246c2d0eef79bd7cc8bc85966a8561c
diff --git a/PRESUBMIT.cfg b/PRESUBMIT.cfg
new file mode 100644
index 0000000..087dfa3
--- /dev/null
+++ b/PRESUBMIT.cfg
@@ -0,0 +1,3 @@
+[Hook Overrides]
+cros_license_check: false
+aosp_license_check: true