FCC unlock operation for Foxconn modems

Fixes #373 (closed)

plugins/foxconn/mm-broadband-modem-mbim-foxconn.c

@@ -113,7 +113,7 @@ fcc_unlock (MMIfaceModem        *self,
     input = qmi_message_dms_foxconn_set_fcc_authentication_input_new ();
     qmi_message_dms_foxconn_set_fcc_authentication_input_set_value (input, 0x00, NULL);
     qmi_client_dms_foxconn_set_fcc_authentication (QMI_CLIENT_DMS (client),
-                                                   NULL,
+                                                   input,
                                                    5,
                                                    NULL,
                                                    (GAsyncReadyCallback)dms_foxconn_set_fcc_authentication_ready,