net: usb: dm9601: Add USB ID of Keenetic Plus DSL

Keenetic Plus DSL is a xDSL modem that uses dm9620 as its USB interface.
Signed-off-by: NKamil Lorenc <kamil@re-ws.pl>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/usb/dm9601.c

@@ -625,6 +625,10 @@ static const struct usb_device_id products[] = {
 	 USB_DEVICE(0x0a46, 0x1269),	/* DM9621A USB to Fast Ethernet Adapter */
 	 .driver_info = (unsigned long)&dm9601_info,
 	},
+	{
+	 USB_DEVICE(0x0586, 0x3427),	/* ZyXEL Keenetic Plus DSL xDSL modem */
+	 .driver_info = (unsigned long)&dm9601_info,
+	},
 	{},			// END
 };