Merge pull request #15687 from coolljt0725/add_blk_dev_throttling_to_check_config

Add CONFIG_BLK_DEV_THROTTLING to check-config.sh

contrib/check-config.sh

@@ -198,7 +198,7 @@ else
 fi
 
 flags=(
-	BLK_CGROUP IOSCHED_CFQ
+	BLK_CGROUP IOSCHED_CFQ BLK_DEV_THROTTLING
 	CGROUP_PERF
 	CGROUP_HUGETLB
 	NET_CLS_CGROUP $netprio