Specify SDK version for RS graphics tests.

Change-Id: Ia61c753392432b91f91260a9b8769dfd396c259f
diff --git a/tests/RenderScriptTests/ModelViewer/Android.mk b/tests/RenderScriptTests/ModelViewer/Android.mk
index 18ceac5..86724cf 100644
--- a/tests/RenderScriptTests/ModelViewer/Android.mk
+++ b/tests/RenderScriptTests/ModelViewer/Android.mk
@@ -22,6 +22,8 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, src) $(call all-renderscript-files-under, src)
 #LOCAL_STATIC_JAVA_LIBRARIES := android.renderscript
 
+LOCAL_SDK_VERSION := 17
+
 LOCAL_PACKAGE_NAME := ModelViewer
 
 include $(BUILD_PACKAGE)