Refactoring: Moved include files

Moved include files from include/ to include/libevdev to mirror include
structure in target folder.

BUG=chromium-os:31022
TEST=emerge -av1 libevdev; emerge -av1 xf86-input-cmt;

Change-Id: Iee58f4e8080bbf7e99bd67d9e5fc09e72e9e32ff
diff --git a/src/libevdev_event.c b/src/libevdev_event.c
index 65df701..feb43ca 100644
--- a/src/libevdev_event.c
+++ b/src/libevdev_event.c
@@ -4,15 +4,15 @@
  * found in the LICENSE file.
  */
 
-#include "libevdev_event.h"
+#include <libevdev/libevdev_event.h>
 
 #include <errno.h>
 #include <linux/input.h>
 #include <stdbool.h>
 #include <time.h>
 
-#include "libevdev.h"
-#include "libevdev_util.h"
+#include <libevdev/libevdev.h>
+#include <libevdev/libevdev_util.h>
 
 #ifndef BTN_TOOL_QUINTTAP
 #define BTN_TOOL_QUINTTAP  0x148  /* Five fingers on trackpad */