scripts: qapi-commands.py: qmp-commands.h: include qdict.h

qmp-commands.h declares several functions that have arguments of
type QDict. However, qdict.h is not included. This will cause a
build breakage when a file includes qmp-commands.h but doesn't
include qdict.h.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

scripts/qapi-commands.py

diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py
index 9eed40e..3c4678d 100644
--- a/scripts/qapi-commands.py
+++ b/scripts/qapi-commands.py
@@ -342,6 +342,7 @@
 #define %(guard)s
 
 #include "%(prefix)sqapi-types.h"
+#include "qdict.h"
 #include "error.h"
 
 ''',