untested: arm_mpam: resctrl: Add support for mbm counters

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 types of counters, NUMA-local and global. MPAM has only
bandwidth counters, but the position of the MSC may mean it counts
NUMA-local, or global traffic.

But the topology information is not available.

Apply a hueristic: the L2 or L3 supports bandwidth monitors, these are
probably NUMA-local. If the memory controller supports bandwidth
monitors, they are probably global.

This selection is made from mpam_resctrl_resource_init(), which
implies resources that can be used for resctrl controls exist and
also have counters. This would be a problem on a platform that only
supports monitoring.

TODO: Add an extra pass of all classes to find the classes to use
as bandwidth counters.

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