perf jevents: Add cpuid to model lookup command

When restricting jevents generated json lookup code with JEVENTS_MODEL
a list of models must be provided. Some builds don't know model names
but know cpuids. Add a command that can convert a cpuid to a model
using mapfile.csv files. This can be used with JEVENTS_MODEL like:

  $ make JEVENTS_MODEL=`./pmu-events/models.py x86 'GenuineIntel-6-8D-1,AuthenticAMD-26-1' pmu-events/arch/`

Committer testing:

  $ tools/perf/pmu-events/models.py x86 'GenuineIntel-6-8D-1,AuthenticAMD-26-1' tools/perf/pmu-events/arch/
  tigerlake,amdzen5
  $ perf stat -v sleep 1 |& head -1
  Using CPUID GenuineIntel-6-B7-1
  $ tools/perf/pmu-events/models.py x86 'GenuineIntel-6-B7-1' tools/perf/pmu-events/arch/
  alderlake
  $

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240904044351.712080-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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