gmscore-latest: add info about proguarded files

Bug:
Change-Id: I881d6ed48f4e8caaaff3bd4b99d51cfc10b79a1c
diff --git a/tools/gmscore_data.py b/tools/gmscore_data.py
index e77ea18..c8c81a3 100644
--- a/tools/gmscore_data.py
+++ b/tools/gmscore_data.py
@@ -123,5 +123,10 @@
           '%s/proguardsettings/GmsCore_proguard.config' % THIRD_PARTY],
       'min-api' : ANDROID_L_API,
     },
+    'proguarded' : {
+      'inputs': ['%s_proguard.jar' % LATEST_PREFIX],
+      'pgmap': '%s_proguard.map' % LATEST_PREFIX,
+      'min-api' : ANDROID_L_API,
+    }
   },
 }