arm64/mpam: Re-plan intpartid narrowing process

hulk inclusion
category: feature
feature: ARM MPAM support
bugzilla: 48265
CVE: NA

--------------------------------

MPAMCFG_INTPARTID.INTERNAL must be set when narrowing reqpartid to
intpartid according to MPAM spec definitions, and this action must be
done before writing MPAMCFG_PART_SEL if narrowing implemented. So we
plan this work that do narrowing unifiedly when narrowing is supported.

Signed-off-by: Wang ShaoBo <bobo.shaobowang@huawei.com>
Reviewed-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: Cheng Jian <cj.chengjian@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>