arm64/mpam: Expand the monitor number of the resctrl root

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I97GSW



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Expand the monitor number of the resctrl root to 1023, instead of 255.

Fixes: 0b16164d ("arm64/mpam: Remap reqpartid,pmg to rmid and intpartid to closid")
Signed-off-by: Zeng Heng <zengheng4@huawei.com>