qapi: move include files to include/qobject/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index f1aabb3..a276540 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -322,7 +322,7 @@
 #ifndef %(guard)s
 #define %(guard)s
 
-#include "qapi/qapi-visit-core.h"
+#include "qapi/visitor.h"
 #include "%(prefix)sqapi-types.h"
 ''',
                   prefix=prefix, guard=guardname(h_file)))