arm_mpam: resctrl: Implement helpers to update configuration

maillist inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8T2RT

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git/log/?h=mpam/snapshot/v6.7-rc2



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resctrl has two helpers for updating the configuration.
resctrl_arch_update_one() updates a single value, and is used by the
software-controller to apply feedback to the bandwidth controls,
it has to be called on one of the CPUs in the resctrl:domain.

resctrl_arch_update_domains() copies multiple staged configurations,
it can be called from anywhere.

Both helpers should update any changes to the underlying hardware.

Imlpement resctrl_arch_update_domains() to use
resctrl_arch_update_one(), which doesn't depend on being called
on the right CPU.

Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Zeng Heng <zengheng4@huawei.com>