!1262 drm/msm/dpu: Add check for pstates

Merge Pull Request from: @ci-robot 
 
PR sync from: Xia Fukun <xiafukun@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/LCJWGRWDEBQ2SDVR5JOAP447NA4IDPK4/ 
 
 
Link:https://gitee.com/openeuler/kernel/pulls/1262

 

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