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/psycho_common.c b/arch/sparc/kernel/psycho_common.c
index 8f1478475..3f34ac8 100644
--- a/arch/sparc/kernel/psycho_common.c
+++ b/arch/sparc/kernel/psycho_common.c
@@ -450,7 +450,7 @@
 void psycho_pbm_init_common(struct pci_pbm_info *pbm, struct of_device *op,
 			    const char *chip_name, int chip_type)
 {
-	struct device_node *dp = op->node;
+	struct device_node *dp = op->dev.of_node;
 
 	pbm->name = dp->full_name;
 	pbm->numa_node = -1;