qapi: move include files to include/qobject/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/qemu-img.c b/qemu-img.c
index c989a52..a13bc78 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -23,7 +23,7 @@
  */
 #include "qapi-visit.h"
 #include "qapi/qmp-output-visitor.h"
-#include "qjson.h"
+#include "qapi/qmp/qjson.h"
 #include "qemu-common.h"
 #include "qemu-option.h"
 #include "qemu-error.h"