mm: hugetlb_vmemmap: disable hugetlb_vmemmap when dynamic hugetlb is enabled

hulk inclusion
category: feature
bugzilla: 187198, https://gitee.com/openeuler/kernel/issues/I5GVFO


CVE: NA

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Disable hugetlb_vmemmap when dynamic hugetlb is enabled.
By the way, fix a similar spelling error.

Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>