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/ata/pata_macio.c b/drivers/ata/pata_macio.c
index 211b643..c74f13b 100644
--- a/drivers/ata/pata_macio.c
+++ b/drivers/ata/pata_macio.c
@@ -1139,7 +1139,7 @@
 			"Failed to allocate private memory\n");
 		return -ENOMEM;
 	}
-	priv->node = of_node_get(mdev->ofdev.node);
+	priv->node = of_node_get(mdev->ofdev.dev.of_node);
 	priv->mdev = mdev;
 	priv->dev = &mdev->ofdev.dev;