tracing/events: move trace point headers into include/trace/events

Impact: clean up

Create a sub directory in include/trace called events to keep the
trace point headers in their own separate directory. Only headers that
declare trace points should be defined in this directory.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Zhao Lei <zhaolei@cn.fujitsu.com>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/mm/util.c b/mm/util.c
index 0e74a22..6794a33 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -7,7 +7,7 @@
 #include <asm/uaccess.h>
 
 #define CREATE_TRACE_POINTS
-#include <trace/kmem.h>
+#include <trace/events/kmem.h>
 
 /**
  * kstrdup - allocate space for and copy an existing string