Fix port overrides for faust output ports.

build_utils/yaml2node_description.py

@@ -99,6 +99,9 @@ if args.faust_json:
             else:
                 port['name'] = 'out%d' % port_num
 
+        if port['name'] in port_overrides:
+            port.update(port_overrides[port['name']])
+
         for field in REQUIRED_PORT_FIELDS:
             if not field in port:
                 raise ValueError("Missing field '%s' for output port %d" % (field, port_num))