iommu/arm-smmu-v3: Add support to get SMMU mpam configuration

ascend inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I49RB2


CVE: NA

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Add interface to get mpam configuration of CD/STE context, use s1mpam
to indicate whether partid and pmg from CD or STE.

Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Reviewed-by: Yingtai Xie <xieyingtai@huawei.com>
Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>