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/arch/sparc/kernel/auxio_64.c b/arch/sparc/kernel/auxio_64.c
index 9f52db2..bd8421a 100644
--- a/arch/sparc/kernel/auxio_64.c
+++ b/arch/sparc/kernel/auxio_64.c
@@ -104,7 +104,7 @@
 
 static int __devinit auxio_probe(struct of_device *dev, const struct of_device_id *match)
 {
-	struct device_node *dp = dev->node;
+	struct device_node *dp = dev->dev.of_node;
 	unsigned long size;
 
 	if (!strcmp(dp->parent->name, "ebus")) {