ascend inclusion
category: feature
bugzilla: NA
CVE: NA

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allocate huge page and setup page table for Davinci online mode.
remove vma parameter so  hisi driver doesn't have to make a fake vma.
add a new interface to retrieve hugepage stats.
Signed-off-by: NZefan Li <lizefan@huawei.com>
Signed-off-by: NLI Heng <liheng40@huawei.com>
Signed-off-by: NLijun Fang <fanglijun3@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>