Add PreferenceController for support tile in homepage.

Change-Id: I8fe93456a761382513c07ff85c858ded30f599fc
Fixes: 116875332
Test: robotests

src/com/android/settings/homepage/TopLevelSettings.java

@@ -33,6 +33,7 @@ import com.android.settings.R;
 import com.android.settings.core.SubSettingLauncher;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settings.support.SupportPreferenceController;
 import com.android.settingslib.core.instrumentation.Instrumentable;
 import com.android.settingslib.search.SearchIndexable;
 
@@ -67,6 +68,12 @@ public class TopLevelSettings extends DashboardFragment implements
         return MetricsProto.MetricsEvent.DASHBOARD_SUMMARY;
     }
 
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        use(SupportPreferenceController.class).setActivity(getActivity());
+    }
+
     @Override
     public int getHelpResource() {
         // Disable the help icon because this page uses a full search view in actionbar.