sysemu: avoid proliferation of include/ subdirectories

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/util/event_notifier-posix.c b/util/event_notifier-posix.c
index 713d756..8442c6e 100644
--- a/util/event_notifier-posix.c
+++ b/util/event_notifier-posix.c
@@ -12,7 +12,7 @@
 
 #include "qemu-common.h"
 #include "qemu/event_notifier.h"
-#include "char/char.h"
+#include "sysemu/char.h"
 #include "qemu/main-loop.h"
 
 #ifdef CONFIG_EVENTFD