drivers/perf: apple_m1: Add Apple M2 support

The PMU itself is compatible with the one found on M1. We still know
next to nothing about the counters so keep using CPU uarch specific
compatibles/PMU names.

Signed-off-by: Janne Grunau <j@jannau.net>
Acked-by: Mark Rutland <mark.rutland@arm.com.>
Reviewed-by: Hector Martin <marcan@marcan.st>
Link: https://lore.kernel.org/r/20230214-apple_m2_pmu-v1-2-9c9213ab9b63@jannau.net


Signed-off-by: Will Deacon <will@kernel.org>