trace-cmd: Document --tsc2nsec option

Document the "trace-cmd record --tsc2nsec" option.

Link: https://lore.kernel.org/linux-trace-devel/20210329125821.97496-4-tz.stoyanov@gmail.com

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