add PRESUBMIT.cfg

This adds a presubmit config file so we don't get annoying repo upload
warnings for tabs and software license.

BUG=none
BRANCH=none
TEST=tried uploading a change, didn't get nagged for tabs and license

Change-Id: Ia46ae58c6281fb6cc7ac0864d45c613908cb2df4
Reviewed-on: https://gerrit.chromium.org/gerrit/45141
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
diff --git a/PRESUBMIT.cfg b/PRESUBMIT.cfg
new file mode 100644
index 0000000..420337e
--- /dev/null
+++ b/PRESUBMIT.cfg
@@ -0,0 +1,5 @@
+# This project uses BSD/GPLv2 for the license and tabs for indentation.
+
+[Hook Overrides]
+cros_license_check: false
+tab_check: false