tracing: Add a filter argument to __ftrace_set_clr_event()

Make it possible to directly enable a filter when enabling an event.

For now this is unused, an upcoming patch will wire it up.

Link: https://patch.msgid.link/20260908-tracing-cli-event-filter-v2-6-05396a3fb663@linutronix.de
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>