Fix too many receivers Exception

Each time window focus changes on rotation,
a separate controller is created which further registers a new
receiver each time.

Bug: 173166718
Change-Id: I500a6ae5cf7058364e43baa44b7161c5dcfbc232

src/com/android/settings/homepage/contextualcards/ControllerRendererPool.java

@@ -56,7 +56,7 @@ public class ControllerRendererPool {
         final Class<? extends ContextualCardController> clz =
                 ContextualCardLookupTable.getCardControllerClass(cardType);
         for (ContextualCardController controller : mControllers) {
-            if (controller.getClass() == clz) {
+            if (controller.getClass().getName().equals(clz.getName())) {
                 Log.d(TAG, "Controller is already there.");
                 return (T) controller;
             }