Add vhau@ to OWNERS of SurfaceFlinger

Bug: N/A
Test: N/A
diff --git a/services/surfaceflinger/OWNERS b/services/surfaceflinger/OWNERS
index 69d8c89..4ef64b6 100644
--- a/services/surfaceflinger/OWNERS
+++ b/services/surfaceflinger/OWNERS
@@ -5,4 +5,5 @@
 lpy@google.com
 marissaw@google.com
 racarr@google.com
-stoza@google.com
\ No newline at end of file
+stoza@google.com
+vhau@google.com