Add default code reviewers into OWNERS

Bug: 33166666
Test: gerrit uploader
Change-Id: I7e03861dea72325ad2ce39d5edb3f2a068bbccef
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