perf data ctf: Add 'all' option

If 'all' option is selected, 'perf data convert' should convert not only
samples, but non-sample events such as comm and fork. Add this option in
perf_data_convert_opts. Following commits will add cmdline option to
select it.

Signed-off-by: Wang Nan <[e-mail]>
Acked-by: Jiri Olsa <[e-mail]>
Cc: Zefan Li <[e-mail]>
Cc: [e-mail]
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-data.c

···
 	const char *to_ctf     = NULL;
 	struct perf_data_convert_opts opts = {
 		.force = false,
+		.all = false,
 	};
 	const struct option options[] = {
 		OPT_INCR('v', "verbose", &verbose, "be more verbose"),

tools/perf/util/data-convert.h

···
 
 struct perf_data_convert_opts {
 	bool force;
+	bool all;
 };
 
 #endif /* __DATA_CONVERT_H */