Demote no matching work message to verbose logging only on avalon.

driver-avalon.c

@@ -701,8 +701,8 @@ static void avalon_inc_nvw(struct avalon_info *info, struct thr_info *thr)
 	if (unlikely(info->idle))
 		return;
 
-	applog(LOG_WARNING, "%s%d: No matching work - HW error",
-			thr->cgpu->drv->name, thr->cgpu->device_id);
+	applog(LOG_INFO, "%s%d: No matching work - HW error",
+	       thr->cgpu->drv->name, thr->cgpu->device_id);
 
 	inc_hw_errors(thr);
 	info->no_matching_work++;