watchdog/corelockup: Optimized core lockup detection judgment rules

ascend inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4F3V1


CVE: NA

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Optimized core lockup detection judgment rules to
make it easier to understand.

Core suspension detection is performed in the hrtimer
interrupt processing function. The detection condition
is that the hrtimer interrupt and NMI interrupt are not
updated for multiple consecutive times.

Signed-off-by: Xu Qiang <xuqiang36@huawei.com>
Reviewed-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>