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>
diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c
index 4293cfd..36360e2 100644
--- a/drivers/usb/host/isp1760-if.c
+++ b/drivers/usb/host/isp1760-if.c
@@ -31,7 +31,7 @@
 		const struct of_device_id *match)
 {
 	struct usb_hcd *hcd;
-	struct device_node *dp = dev->node;
+	struct device_node *dp = dev->dev.of_node;
 	struct resource *res;
 	struct resource memory;
 	struct of_irq oirq;