Updated AssertFatal conditions and LOG level from I to D

Regarding dl_hard, some AssertFatal commented out.
Regarding to memory allocation error, AssertFatal was used.

openair2/PHY_INTERFACE/queue.c

@@ -165,4 +165,4 @@ void *unqueue_matching(queue_t *q, size_t max_depth, queue_matcher_t *matcher, v
 
     pthread_mutex_unlock(&q->mutex);
     return item;
-}
+}