Add the CTS Graphics to the set of tests that can be packaged and run independently.

Change-Id: I3f94de140bb2a9aafa0a29e661ddd511550043b1
diff --git a/tests/tests/graphics/Android.mk b/tests/tests/graphics/Android.mk
index cad81b2..b65bb1b 100644
--- a/tests/tests/graphics/Android.mk
+++ b/tests/tests/graphics/Android.mk
@@ -16,10 +16,7 @@
 
 include $(CLEAR_VARS)
 
-# don't include this package in any target
-LOCAL_MODULE_TAGS := optional
-# and when built explicitly put it in the data partition
-LOCAL_MODULE_PATH := $(TARGET_OUT_DATA_APPS)
+LOCAL_MODULE_TAGS := tests
 
 LOCAL_STATIC_JAVA_LIBRARIES := ctstestrunner