net: ti: icssg_prueth: populate netdev of_node

Allow of_find_net_device_by_node() to find icssg_prueth ports and make
the individual ports' of_nodes available in sysfs.
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20240807121215.3178964-1-matthias.schiffer@ew.tq-group.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/ti/icssg/icssg_prueth.c

@@ -857,6 +857,7 @@ static int prueth_netdev_init(struct prueth *prueth,
 	}
 	ether_addr_copy(emac->mac_addr, ndev->dev_addr);
 
+	ndev->dev.of_node = eth_node;
 	ndev->min_mtu = PRUETH_MIN_PKT_SIZE;
 	ndev->max_mtu = PRUETH_MAX_MTU;
 	ndev->netdev_ops = &emac_netdev_ops;

drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c

@@ -847,6 +847,7 @@ static int prueth_netdev_init(struct prueth *prueth,
 	}
 	ether_addr_copy(emac->mac_addr, ndev->dev_addr);
 
+	ndev->dev.of_node = eth_node;
 	ndev->min_mtu = PRUETH_MIN_PKT_SIZE;
 	ndev->max_mtu = PRUETH_MAX_MTU;
 	ndev->netdev_ops = &emac_netdev_ops;