Hugtlb: bugfix for hugetlb remap

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I63SDZ



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In Ascend feature, some driver's VMA struct contains hugepage and nomal
page. In this case, we can's using VMA's message to alloc page. To fix
this, we only alloc huge page directly in this interface rather than
using VMA's message.

Signed-off-by: Zhou Guanghui <zhouguanghui1@huawei.com>