driver inclusion
category: Bugfix
bugzilla: NA
CVE: NA

sysctl: fixup rcu critical area using ioremap which might sleep.
Signed-off-by: Nfengsheng <fengsheng5@huawei.com>
Reviewed-by: Nzhangmu <zhangmu1@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>