perf vendor events arm64: Add PE utilization metrics for neoverse-n2-v2

Add PE utilization related metrics. In cpu_utilization metric, if it is
neoverse-n2 which slots are 5, the real stall_slot need to subtract the
cpu_cycles according to the neoverse-n2 errata [0].

[0] https://documentation-service.arm.com/static/636a66a64e6cf12278ad89cb?token=

Reviewed-by: John Garry <[email protected]>
Signed-off-by: Jing Zhang <[email protected]>
Acked-by: Ian Rogers <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andrew Kilroy <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Shuai Xue <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Xing Zhengjun <[email protected]>
Cc: Zhuo Song <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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