[CTS] Restrict telecom2 mk cross over to TestUtils

bug:28186836
Change-Id: Ic842e8ca4c1609cc452ec2641e54b940ac453f2d
diff --git a/tests/tests/telecom2/Android.mk b/tests/tests/telecom2/Android.mk
index c7fd387..c16a9dd 100644
--- a/tests/tests/telecom2/Android.mk
+++ b/tests/tests/telecom2/Android.mk
@@ -27,7 +27,7 @@
 LOCAL_STATIC_JAVA_LIBRARIES := ctstestrunner
 
 src_dirs := src \
-    ../telecom/src
+    ../telecom/src/android/telecom/cts/TestUtils.java
 
 res_dirs := res \
     ../telecom/res