arm64/mpam: Supplement MPAM MSC register layout definitions

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

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Memory Partitioning and Monitoring (MPAM) has memory mapped
devices (MSCs) with an identity/configuration page.

Supplement the definitions for these registers as offset
within the page(s).

[Wang ShaoBo: replace tab with space and useful definitions are added]

Signed-off-by: James Morse <james.morse@arm.com>
http://www.linux-arm.org/git?p=linux-jm.git;a=patch;h=a9102d227c371ec3cf3913fe735243840a985c18


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>