Change priority of itti thread.

common/utils/itti/intertask_interface.c

@@ -782,7 +782,7 @@ void itti_mark_task_ready(task_id_t task_id)
   /* Mark the thread as using LFDS queue */
   lfds611_queue_use(itti_desc.tasks[task_id].message_queue);
 
-#ifdef RTAI
+#if defined(UE_EXPANSION) || defined(RTAI)
   /* Assign low priority to created threads */
   {
     struct sched_param sched_param;