of: Always use 'struct device.of_node' to get device node pointer.

The following structure elements duplicate the information in
'struct device.of_node' and so are being eliminated.  This patch
makes all readers of these elements use device.of_node instead.

(struct of_device *)->node
(struct dev_archdata *)->prom_node (sparc)
(struct dev_archdata *)->of_node (powerpc & microblaze)

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

arch/powerpc/platforms/82xx/ep8248e.c

@@ -119,12 +119,12 @@ static int __devinit ep8248e_mdio_probe(struct of_device *ofdev,
 	struct device_node *node;
 	int ret;
 
-	node = of_get_parent(ofdev->node);
+	node = of_get_parent(ofdev->dev.of_node);
 	of_node_put(node);
 	if (node != ep8248e_bcsr_node)
 		return -ENODEV;
 
-	ret = of_address_to_resource(ofdev->node, 0, &res);
+	ret = of_address_to_resource(ofdev->dev.of_node, 0, &res);
 	if (ret)
 		return ret;
 
@@ -142,7 +142,7 @@ static int __devinit ep8248e_mdio_probe(struct of_device *ofdev,
 	bus->parent = &ofdev->dev;
 	snprintf(bus->id, MII_BUS_ID_SIZE, "%x", res.start);
 
-	ret = of_mdiobus_register(bus, ofdev->node);
+	ret = of_mdiobus_register(bus, ofdev->dev.of_node);
 	if (ret)
 		goto err_free_irq;