!6010 PM / devfreq: Synchronize devfreq_monitor_[start/stop

Merge Pull Request from: @ci-robot 
 
PR sync from: Yi Yang <yiyang13@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/SX6HRLOWWRHEKNGB25QFUKNUTCVDPN3H/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9DNGK 
 
Link:https://gitee.com/openeuler/kernel/pulls/6010

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>