OmniGears: fix omni contributions for 8.1

Change-Id: I2639c4922c3425a1ec7493b0e4d292877a024e2f
diff --git a/src/org/omnirom/omnigears/OmniDashboardFragment.java b/src/org/omnirom/omnigears/OmniDashboardFragment.java
index df77ad4..809541f 100644
--- a/src/org/omnirom/omnigears/OmniDashboardFragment.java
+++ b/src/org/omnirom/omnigears/OmniDashboardFragment.java
@@ -22,10 +22,10 @@
 
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
-import com.android.settings.core.PreferenceController;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.search.Indexable;
+import com.android.settingslib.core.AbstractPreferenceController;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -52,7 +52,7 @@
     }
 
     @Override
-    protected List<PreferenceController> getPreferenceControllers(Context context) {
+    protected List<AbstractPreferenceController> getPreferenceControllers(Context context) {
         return null;
     }
 }