arm64: hugetlb: fix the wrong address for several functions

arm64: hugetlb: fix the wrong address for several functions

The libhugetlbfs meets several failures since the following functions
do not use the correct address:
   huge_ptep_get_and_clear()
   huge_ptep_set_access_flags()
   huge_ptep_set_wrprotect()
   huge_ptep_clear_flush()

This patch fixes the wrong address for them.

Signed-off-by: Huang Shijie <shijie.huang@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 0c2f0afe3582c58efeef93bc57bc07d502132618)
Signed-off-by: Alex Shi <alex.shi@linaro.org>