driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

When clear hem，the father function may use spin_lock_irqsave,
then jiffies may not work.
We can use only the xdelay() for delay control.
Signed-off-by: NLang Cheng <chenglang@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>