arm64: Optimize ttwu IPI

hulk inclusion
category: feature
bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=34


CVE: NA

When it is to wake up a task in a remote cpu shared LLC , we can
simply set need_resched flag, waking up a cpu that is in polling
idle. This wakeup action does not require an IPI.

But the premise is that it need to support _TIF_POLLING_NRFLAG

Signed-off-by: Xiangyou Xie <xiexiangyou@huawei.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Jiajun Chen <chenjiajun8@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>