vts test for 1.2

Add VTS test for 1.2 interface

Test: verfied the test with a dummy radio service

Bug:67750232
Change-Id: Ieac680a303c79a9d4c8b314112121303b3aebcce
diff --git a/radio/Android.bp b/radio/Android.bp
index a209d9d..758de07 100644
--- a/radio/Android.bp
+++ b/radio/Android.bp
@@ -5,5 +5,6 @@
     "1.1",
     "1.1/vts/functional",
     "1.2",
+    "1.2/vts/functional",
     "deprecated/1.0",
 ]