Add repo preupload config

Enable buildifier on top of the default lint

Change-Id: I9ff37f51e1838b7642b636be7071bccb808c625d

PREUPLOAD.cfg

diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
new file mode 100644
index 0000000..f88c10e
--- /dev/null
+++ b/PREUPLOAD.cfg
@@ -0,0 +1,17 @@
+# Per-project `repo upload` hook settings.
+# https://android.googlesource.com/platform/tools/repohooks
+
+[Options]
+ignore_merged_commits = true
+
+[Builtin Hooks]
+pylint3 = true
+cpplint = true
+clang_format = true
+
+[Builtin Hooks Options]
+clang_format = --commit ${PREUPLOAD_COMMIT} --style file --extensions c,h,cc,cpp
+
+[Hook Scripts]
+buildifier = ${REPO_ROOT}/scripts/preupload-hooks/run_buildifier.sh ${PREUPLOAD_COMMIT}
+yapf-diff = ${REPO_ROOT}/scripts/preupload-hooks/yapf-diff.sh ${PREUPLOAD_COMMIT}