arm64: openeuler_defconfig: Adjust page size to 4K and VA_BITS to 48

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4HDHZ


CVE: NA

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For arm64 openeuler_defconfig:
Change default page size from 64K to 4K,
then enable CONFIG_ARM64_VA_BITS_48.

Following configs are involved:
CONFIG_ARM64_PAGE_SHIFT=12
CONFIG_ARM64_CONT_PTE_SHIFT=4
CONFIG_ARM64_CONT_PMD_SHIFT=4
CONFIG_ARCH_MMAP_RND_BITS_MIN=18
CONFIG_ARCH_MMAP_RND_BITS_MAX=33
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
CONFIG_PGTABLE_LEVELS=4
CONFIG_ARM64_4K_PAGES=y
CONFIG_ARM64_64K_PAGES=n
CONFIG_ARM64_VA_BITS_48=y
CONFIG_ARM64_VA_BITS_52=n
CONFIG_ARM64_VA_BITS=48
CONFIG_ARM64_PA_BITS_48=y
CONFIG_ARM64_PA_BITS_52=n
CONFIG_ARM64_PA_BITS=48
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_FORCE_MAX_ZONEORDER=11
CONFIG_ARCH_MMAP_RND_BITS=18
CONFIG_ARCH_MMAP_RND_COMPAT_BITS=11

Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>