tracing/events: call the correct event trace selftest init function

The late_initcall calls a helper function instead of the proper
init event selftest function.

This update may have been lost due to conflicting merges.

[ Impact: fix compiler warning and call extended event trace self tests ]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 64f9d6d..98daf5d 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1199,6 +1199,6 @@
 	return 0;
 }
 
-late_initcall(event_trace_self_tests);
+late_initcall(event_trace_self_tests_init);
 
 #endif