perf thread_map: Make new_by_tid_str constructor public

It will be used in following patch.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1460467771-26532-6-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/thread_map.c

@@ -260,7 +260,7 @@ struct thread_map *thread_map__new_dummy(void)
 	return threads;
 }
 
-static struct thread_map *thread_map__new_by_tid_str(const char *tid_str)
+struct thread_map *thread_map__new_by_tid_str(const char *tid_str)
 {
 	struct thread_map *threads = NULL, *nt;
 	int ntasks = 0;

tools/perf/util/thread_map.h

@@ -31,6 +31,8 @@ void thread_map__put(struct thread_map *map);
 struct thread_map *thread_map__new_str(const char *pid,
 		const char *tid, uid_t uid);
 
+struct thread_map *thread_map__new_by_tid_str(const char *tid_str);
+
 size_t thread_map__fprintf(struct thread_map *threads, FILE *fp);
 
 static inline int thread_map__nr(struct thread_map *threads)