Add network detect when boot

app/src/leanback/java/com/fongmi/android/tv/receiver/BootReceiver.java

@@ -46,6 +46,7 @@ public class BootReceiver extends BroadcastReceiver {
         private void doJob() {
             LiveConfig.get().init().load();
             DLNARendererService.Companion.start(App.get(), R.drawable.ic_logo);
+            ((ConnectivityManager) App.get().getSystemService(Context.CONNECTIVITY_SERVICE)).unregisterNetworkCallback(this);
         }
     }
 }