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/char/hw_random/n2-drv.c b/drivers/char/hw_random/n2-drv.c
index 10f868e..0861d99 100644
--- a/drivers/char/hw_random/n2-drv.c
+++ b/drivers/char/hw_random/n2-drv.c
@@ -660,7 +660,7 @@
 				np->hvapi_major);
 			goto out_hvapi_unregister;
 		}
-		np->num_units = of_getintprop_default(op->node,
+		np->num_units = of_getintprop_default(op->dev.of_node,
 						      "rng-#units", 0);
 		if (!np->num_units) {
 			dev_err(&op->dev, "VF RNG lacks rng-#units property\n");