net: mhi: Set wwan device type

The 'wwan' devtype is meant for devices that require additional
configuration to be used, like WWAN specific APN setup over AT/QMI
commands, rmnet link creation, etc. This is the case for MHI (Modem
host Interface) netdev which targets modem/WWAN endpoints.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1611328554-1414-1-git-send-email-loic.poulain@linaro.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/mhi_net.c

@@ -248,6 +248,10 @@ static void mhi_net_rx_refill_work(struct work_struct *work)
 		schedule_delayed_work(&mhi_netdev->rx_refill, HZ / 2);
 }
 
+static struct device_type wwan_type = {
+	.name = "wwan",
+};
+
 static int mhi_net_probe(struct mhi_device *mhi_dev,
 			 const struct mhi_device_id *id)
 {
@@ -267,6 +271,7 @@ static int mhi_net_probe(struct mhi_device *mhi_dev,
 	mhi_netdev->ndev = ndev;
 	mhi_netdev->mdev = mhi_dev;
 	SET_NETDEV_DEV(ndev, &mhi_dev->dev);
+	SET_NETDEV_DEVTYPE(ndev, &wwan_type);
 
 	/* All MHI net channels have 128 ring elements (at least for now) */
 	mhi_netdev->rx_queue_sz = 128;