configs: enable BFQ hierarchical scheduling support

CONFIG_BFQ_GROUP_IOSCHED is required when we need BFQ support in
cgroup-v1 and cgroup-v2.
Signed-off-by: NCaspar Zhang <caspar@linux.alibaba.com>

config-4.19.y-x86_64

@@ -833,7 +833,7 @@ CONFIG_DEFAULT_IOSCHED="deadline"
 CONFIG_MQ_IOSCHED_DEADLINE=y
 CONFIG_MQ_IOSCHED_KYBER=y
 CONFIG_IOSCHED_BFQ=y
-# CONFIG_BFQ_GROUP_IOSCHED is not set
+CONFIG_BFQ_GROUP_IOSCHED=y
 CONFIG_PREEMPT_NOTIFIERS=y
 CONFIG_PADATA=y
 CONFIG_ASN1=y

config-4.19.y-x86_64-debug

@@ -836,7 +836,7 @@ CONFIG_DEFAULT_IOSCHED="deadline"
 CONFIG_MQ_IOSCHED_DEADLINE=y
 CONFIG_MQ_IOSCHED_KYBER=y
 CONFIG_IOSCHED_BFQ=y
-# CONFIG_BFQ_GROUP_IOSCHED is not set
+CONFIG_BFQ_GROUP_IOSCHED=y
 CONFIG_PREEMPT_NOTIFIERS=y
 CONFIG_PADATA=y
 CONFIG_ASN1=y