arm64/mpam: resctrl: Support cpus' monitoring for mon group

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

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So far each mon group is tagged by sd_closid, we can monitor data by
switching cpus' sd_closid.reqpartid and pmg, and ensuring consistent
configuration for mon groups by following it's parent ctrl group through
sd_closid.intpartid.

Most of this code is borrowed from Intel-RDT.

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>