ascend inclusion
category: feature
bugzilla: NA
CVE: NA

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Add helper function for change system hugepage nr, and export it out.
Signed-off-by: NWeilong Chen <chenweilong@huawei.com>
Reviewed-by: NDing Tianhong <dingtianhong@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>