arm64/mpam: Clean up header files and rearrange declarations

hulk inclusion
category: feature
bugzilla: 34278
CVE: NA

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

Rearrange helpers' declaration place for resctrlfs and clean up
header files included, this make code more clear.

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: Cheng Jian <cj.chengjian@huawei.com>