perf c2c: Update documentation for adding memory event table

perf c2c: Update documentation for adding memory event table

Users may occasionally need to see which options are applied to memory
events.

This helps to understand the behavior of "perf c2c" and "perf mem", and
provides guidance for configuring memory event options directly.

Add a table to track memory events and their corresponding options, and
include the Arm SPE events in it.

Suggested-by: Al Grant <al.grant@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>