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/sbus/char/flash.c b/drivers/sbus/char/flash.c
index 19f255b..202ff8f 100644
--- a/drivers/sbus/char/flash.c
+++ b/drivers/sbus/char/flash.c
@@ -162,7 +162,7 @@
 static int __devinit flash_probe(struct of_device *op,
 				 const struct of_device_id *match)
 {
-	struct device_node *dp = op->node;
+	struct device_node *dp = op->dev.of_node;
 	struct device_node *parent;
 
 	parent = dp->parent;
@@ -184,7 +184,7 @@
 	flash.busy = 0;
 
 	printk(KERN_INFO "%s: OBP Flash, RD %lx[%lx] WR %lx[%lx]\n",
-	       op->node->full_name,
+	       op->dev.of_node->full_name,
 	       flash.read_base, flash.read_size,
 	       flash.write_base, flash.write_size);