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/display7seg.c b/drivers/sbus/char/display7seg.c
index 3e59189..7fc7f34 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -216,7 +216,7 @@
 	writeb(regs,  p->regs);
 
 	printk(KERN_INFO PFX "7-Segment Display%s at [%s:0x%llx] %s\n",
-	       op->node->full_name,
+	       op->dev.of_node->full_name,
 	       (regs & D7S_FLIP) ? " (FLIPPED)" : "",
 	       op->resource[0].start,
 	       sol_compat ? "in sol_compat mode" : "");