net: usb: cdc_ncm: Adding Dell DW5813 LTE AT&T Mobile Broadband Card

Unlike DW5550, Dell DW5813 is a mobile broadband card with no ARP
capabilities: the patch makes this device to use wwan_noarp_info struct

Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 3a71e60..3694052 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -1567,6 +1567,15 @@
 	  .driver_info = (unsigned long)&wwan_noarp_info,
 	},
 
+	/* DW5813 LTE AT&T Mobile Broadband Card
+	 * Unlike DW5550 this device requires FLAG_NOARP
+	 */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x413c, 0x81bc,
+		USB_CLASS_COMM,
+		USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE),
+	  .driver_info = (unsigned long)&wwan_noarp_info,
+	},
+
 	/* Dell branded MBM devices like DW5550 */
 	{ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
 		| USB_DEVICE_ID_MATCH_VENDOR,