arm_mpam: Probe for long/lwd mbwu 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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mpam v0.1 and versions above v1.0 support optional long counter for
memory bandwidth monitoring. The MPAMF_MBWUMON_IDR register have fields
indicating support for long counters. As of now, a 44 bit counter
represented by HAS_LONG field (bit 30) and a 63 bit counter represented
by LWD (bit 29) can be optionally integrated. Probe for these counters
and set corresponding feature bits if any of these counters are present.

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