arm64/mpam: Separate internal and downstream priority event

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

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

There are two aspects involved:

  - Getting configuration

    We divide event QOS_XX_PRI_EVENT_ID into QOS_XX_INTPRI_EVENT_ID and
    QOS_XX_DSPRI_EVENT_ID, in spite of having attempted to set same value
    of filling dspri and intpti in mpam_config structure but exactly we
    need read seperately to ensure their independence.

    Besides, an event such as QOS_CAT_INTPRI_EVENT_ID is not necessary to
    be read from MSC's register but set to be 0 directly if corresponding
    feature doesn't support.

  - Applying configuration

    When applying downstream or internal priority configuration, given
    the independence of their two, we should check if feature mpam_feat_
    xxpri_part supported first and next check mpam_feat_xxpri_part_0_low,
    and convert dspri and intpri into a proper value according to it's max
    width.

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>