qapi: Convert block_resize

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
diff --git a/hmp.h b/hmp.h
index b0984ac..c236fd2 100644
--- a/hmp.h
+++ b/hmp.h
@@ -44,5 +44,6 @@
 void hmp_set_link(Monitor *mon, const QDict *qdict);
 void hmp_block_passwd(Monitor *mon, const QDict *qdict);
 void hmp_balloon(Monitor *mon, const QDict *qdict);
+void hmp_block_resize(Monitor *mon, const QDict *qdict);
 
 #endif