event_notifier: move to top-level directory

Has no business in hw/.
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/event_notifier.c → event_notifier.c

@@ -10,7 +10,6 @@
  * the COPYING file in the top-level directory.
  */
 
-#include "hw.h"
 #include "event_notifier.h"
 #ifdef CONFIG_EVENTFD
 #include <sys/eventfd.h>