Add default code reviewers into OWNERS

Bug: 33166666
Test: gerrit uploader
Change-Id: I55db77d75b2cfd18f9799099d53462a62a30cb8a
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..ca2b824
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1 @@
+include platform/external/deqp:/OWNERS