Add default code reviewers into OWNERS
am: 30d78d0023

Change-Id: Ib9206ec742acbe6c03972928d72c0b62d92d9717
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..7529cb9
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1 @@
+include platform/system/core:/janitors/OWNERS