sched/qos: Fix warning in CPU hotplug scenarios

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7ZMCB


CVE: NA

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CPU hotplug callbacks race against distribute_cfs_runtime(),
when the QOS_SCHED feature is enabled, there may be
situations where the cfs_rq-> runtime_remaining == 1
and cfs_rq is QOS_THROTTLED.

Turn off the Qos_throttle when the CPU is offline.
No longer allocate time to cfs_rq in this scenario to fix the warning.

Fixes: 4eb6eb79 ("sched/qos: Don't unthrottle cfs_rq when cfs_rq is throttled by qos")
Signed-off-by: Xia Fukun <xiafukun@huawei.com>