!3746 smart_grid: make sure hot zone have the highest priority

Merge Pull Request from: @ci-robot 
 
PR sync from: Yipeng Zou <zouyipeng@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/L5QHTEC3NJAFRWHYAXKJLZ57VYVSIDCJ/ 
 
https://gitee.com/openeuler/kernel/issues/I8TBJJ 
 
Link:https://gitee.com/openeuler/kernel/pulls/3746

 

Reviewed-by: Zhang Jianhua <chris.zjh@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>