Adding a utility method for getting device prefs

Change-Id: I1e3c7df0a3f4e847b40d722d44890e441cc73509
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index ffda67c..d48b9ab 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -551,6 +551,11 @@
                 LauncherFiles.SHARED_PREFERENCES_KEY, Context.MODE_PRIVATE);
     }
 
+    public static SharedPreferences getDevicePrefs(Context context) {
+        return context.getSharedPreferences(
+                LauncherFiles.DEVICE_PREFERENCES_KEY, Context.MODE_PRIVATE);
+    }
+
     public static boolean isPowerSaverOn(Context context) {
         PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
         return powerManager.isPowerSaveMode();