trace-cmd: Use tracefs_tracing_dir() instead of tracefs_find_tracing_dir()

The tracefs_find_tracing_dir() and tracefs_tracing_dir() are
consolidated. All usage of tracefs_find_tracing_dir() are replaced with
calls to tracefs_tracing_dir().

Link: https://lore.kernel.org/linux-trace-devel/20201222050646.375340-3-tz.stoyanov@gmail.com

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
7 files changed