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/include/trace/define_trace.h b/include/trace/define_trace.h
index 980eb66..1886941 100644
--- a/include/trace/define_trace.h
+++ b/include/trace/define_trace.h
@@ -43,7 +43,7 @@
 #endif
 
 #ifndef TRACE_INCLUDE_PATH
-# define __TRACE_INCLUDE(system) <trace/system.h>
+# define __TRACE_INCLUDE(system) <trace/events/system.h>
 # define UNDEF_TRACE_INCLUDE_FILE
 #else
 # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)