perf auxtrace: Add itrace option flag d+e to log on error

perf auxtrace: Add itrace option flag d+e to log on error

Add flag +e to the itrace d (decoder debug log) option to get output only
on decoding errors.

The log can be very big so reducing the output to where there are decoding
errors can be useful for analyzing errors.

By default, the log size in that case is 16384 bytes, but can be altered by
perf config e.g. perf config itrace.debug-log-buffer-size=30000

Reviewed-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220905073424.3971-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>