Freeze AIDL APIs for SC

Bug: 188713899
Test: m
Change-Id: I8d87d565a29adb4836ce83ceb02fd97c2739261c
diff --git a/stable/Android.bp b/stable/Android.bp
index 5e54e9a..1573ebd 100644
--- a/stable/Android.bp
+++ b/stable/Android.bp
@@ -49,6 +49,7 @@
             ],
         },
     },
+    versions: ["1"],
 }
 
 // update_engine_stable_client (type: executable)