tracing: Block comments should align the * on each line

Resolved Block comments use * on subsequent lines checkpatch warning.
Issue found by checkpatch.

Signed-off-by: Rohit Visavalia <rohit.visavalia@softnautics.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

kernel/trace/trace.c

@@ -2380,7 +2380,7 @@ EXPORT_SYMBOL_GPL(trace_event_buffer_commit);
  *   trace_buffer_unlock_commit_regs()
  *   trace_event_buffer_commit()
  *   trace_event_raw_event_xxx()
-*/
+ */
 # define STACK_SKIP 3
 
 void trace_buffer_unlock_commit_regs(struct trace_array *tr,