!1581 psi: fix compile error for psi cgroupv1 when CONFIG_CGROUP=n

Merge Pull Request from: @ci-robot 
 
PR sync from: Lu Jialin <lujialin4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/PC6T7HRTE7LIGXV2HL57QYEPFKPNYTCX/ 
 
https://gitee.com/openeuler/kernel/issues/I7OOZR 
 
Link:https://gitee.com/openeuler/kernel/pulls/1581

 

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