perf auxtrace: Add optional log flags to the itrace 'd' option

perf auxtrace: Add optional log flags to the itrace 'd' option

Allow the 'd' option to be followed by flags which will affect what debug
messages will or will not be reported. Each flag must be preceded by either
'+' or '-'. The flags are:
	a	all perf events

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20200710151104.15137-8-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>