Add CtsSurfaceControlTestsStaging to SF postsubmit

Bug: 284911776
Test: postsubmit
Change-Id: Ief5488b2954d97b031b4f14e423c8a4bebed4bf8
diff --git a/services/surfaceflinger/TEST_MAPPING b/services/surfaceflinger/TEST_MAPPING
index 5512734..6391f5e 100644
--- a/services/surfaceflinger/TEST_MAPPING
+++ b/services/surfaceflinger/TEST_MAPPING
@@ -34,5 +34,10 @@
     {
       "name": "libscheduler_test"
     }
+  ],
+  "postsubmit": [
+    {
+      "name": "CtsSurfaceControlTestsStaging"
+    }
   ]
 }