Fix MmsService build file

Change-Id: Ibb3f57e7b3593c6d2212163ad472ce24e72d4976
diff --git a/Android.mk b/Android.mk
index 4454200..9ac24c9 100644
--- a/Android.mk
+++ b/Android.mk
@@ -26,7 +26,7 @@
 
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
-LOCAL_RESOURCE_DIR := $(addprefix $(LOCAL_PATH)/, $(res_dirs))
+LOCAL_RESOURCE_DIR := $(LOCAL_PATH)/res
 LOCAL_AAPT_FLAGS := --auto-add-overlay
 
 # TODO (ywen): Temporarily disabled. Turn it on before ship