perf: arm_cspmu: Support implementation specific filters

ARM Coresight PMU architecture specification [1] defines PMEVTYPER and
PMEVFILT* registers as optional in Chapter 2.1. Moreover, implementers may
choose to use PMIMPDEF* registers (offset: 0xD80-> 0xDFF) to filter the
events. Add support for those by adding implementation specific filter
callback function.

[1] https://developer.arm.com/documentation/ihi0091/latest

Signed-off-by: Ilkka Koskinen <[email protected]>
Reviewed-by: Besar Wicaksono <[email protected]>
Reviewed-by: Suzuki K Poulose <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

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