Add summary text to App permissions settings.

Check the granted permissions for the installed app and compose the
summary text to use the first 3 permissions granted from the list:
Location, Microphone, Camera, Sms, Contacts, and Phone.

Change-Id: I61d21f279af2fe86132de22b94e1a49da0225fcd
Fix: 36376411
Test: make RunSettingsRoboTests

src/com/android/settings/applications/AppAndNotificationDashboardFragment.java

@@ -62,6 +62,7 @@ public class AppAndNotificationDashboardFragment extends DashboardFragment {
     private static List<PreferenceController> buildPreferenceControllers(Context context) {
         final List<PreferenceController> controllers = new ArrayList<>();
         controllers.add(new SpecialAppAccessPreferenceController(context));
+        controllers.add(new AppPermissionsPreferenceController(context));
         return controllers;
     }