perf Document: Add TPEBS (Timed PEBS(Precise Event-Based Sampling)) to Documents

TPEBS (Timed PEBS(Precise Event-Based Sampling)) is a new feature Intel
PMU from Granite Rapids microarchitecture.

It will be used in new TMA (Top-Down Microarchitecture Analysis)
releases.

Add related introduction to documents while adding new code to support
it in 'perf stat'.

Reviewed-by: Namhyung Kim <[email protected]>
Signed-off-by: Weilin Wang <[email protected]>
Acked-by: Ian Rogers <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Samantha Alt <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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