Add camera focus move callback.

bug:5534973
Change-Id: Iaadcb2738ad040f94849be30ee531326f6199431
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index bb0e664..4760f07 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -361,7 +361,7 @@
 
     // Enable zoom, error, focus, and metadata messages by default
     enableMsgType(CAMERA_MSG_ERROR | CAMERA_MSG_ZOOM | CAMERA_MSG_FOCUS |
-                  CAMERA_MSG_PREVIEW_METADATA);
+                  CAMERA_MSG_PREVIEW_METADATA | CAMERA_MSG_FOCUS_MOVE);
 
     // Callback is disabled by default
     mPreviewCallbackFlag = CAMERA_FRAME_CALLBACK_FLAG_NOOP;