ekf2: publish filter control mode status

src/modules/ekf2/ekf2_main.cpp

@@ -730,6 +730,7 @@ void Ekf2::task_main()
 		_ekf->get_state_delayed(status.states);
 		_ekf->get_covariances(status.covariances);
 		_ekf->get_gps_check_status(&status.gps_check_fail_flags);
+		_ekf->get_control_mode(&status.control_mode_flags);
 
 		if (_estimator_status_pub == nullptr) {
 			_estimator_status_pub = orb_advertise(ORB_ID(estimator_status), &status);