We now report hotplug events to the framework

Change-Id: I2d6b7787d39e5929485a551e4982498c5053c211
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 80f5d4b..c9877b2 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -218,6 +218,7 @@
      * HWComposer::EventHandler interface
      */
     virtual void onVSyncReceived(int type, nsecs_t timestamp);
+    virtual void onHotplugReceived(int disp, bool connected);
 
     /* ------------------------------------------------------------------------
      * Message handling