lib, traceevent: add PRINT_HEX_STR variant

Add support for the __print_hex_str() macro that was added for
tracing, so that user space tools such as perf can understand
it as well.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/perf/util/scripting-engines/trace-event-perl.c

@@ -217,6 +217,7 @@ static void define_event_symbols(struct event_format *event,
 				       cur_field_name);
 		break;
 	case PRINT_HEX:
+	case PRINT_HEX_STR:
 		define_event_symbols(event, ev_name, args->hex.field);
 		define_event_symbols(event, ev_name, args->hex.size);
 		break;