arm64: errata: enable HISILICON_ERRATUM_HIP08_RU_PREFETCH

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8MKTT


CVE: NA

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enable CONFIG_HISILICON_ERRATUM_HIP08_RU_PREFETCH, to add a
cmdline option to disable prefetch.

Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>