Add the device path to mbm modem creator in NM patch.

NetworkManager-r4232-use-modem-manager.patch

@@ -900,10 +900,10 @@ index 0000000..9b16b0b
 +#endif /* NM_GSM_MODEM_HSO_H */
 diff --git a/src/modem-manager/nm-gsm-modem-mbm.c b/src/modem-manager/nm-gsm-modem-mbm.c
 new file mode 100644
-index 0000000..efa8d4f
+index 0000000..37ca844
 --- /dev/null
 +++ b/src/modem-manager/nm-gsm-modem-mbm.c
-@@ -0,0 +1,260 @@
+@@ -0,0 +1,261 @@
 +/* -*- Mode: C; tab-width: 5; indent-tabs-mode: t; c-basic-offset: 5 -*- */
 +/*
 +  Additions to NetworkManager, network-manager-applet and modemmanager
@@ -993,6 +993,7 @@ index 0000000..efa8d4f
 +								 NM_DEVICE_INTERFACE_IFACE, data_device,
 +								 NM_DEVICE_INTERFACE_DRIVER, driver,
 +								 NM_DEVICE_INTERFACE_MANAGED, TRUE,
++								 NM_MODEM_DEVICE_PATH, path,
 +								 NULL);
 +
 +	if (device) {