perf arm_spe: Decode SME data processing packet

perf arm_spe: Decode SME data processing packet

For SME data processing, decode its Effective vector length or Tile Size
(ETS), and print out if a floating-point operation.

After:

  .  00000000:  49 00                                           SME-OTHER ETS 1024 FP
  .  00000002:  b2 18 3c d7 83 00 80 ff ff                      VA 0xffff800083d73c18
  .  0000000b:  9a 00 00                                        LAT 0 XLAT
  .  0000000e:  43 00                                           DATA-SOURCE 0

Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>