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/video/xilinxfb.c b/drivers/video/xilinxfb.c
index 3fcb83f..6fcec55 100644
--- a/drivers/video/xilinxfb.c
+++ b/drivers/video/xilinxfb.c
@@ -423,7 +423,7 @@
 	 * To check whether the core is connected directly to DCR or PLB
 	 * interface and initialize the tft_access accordingly.
 	 */
-	p = (u32 *)of_get_property(op->node, "xlnx,dcr-splb-slave-if", NULL);
+	p = (u32 *)of_get_property(op->dev.of_node, "xlnx,dcr-splb-slave-if", NULL);
 	tft_access = p ? *p : 0;
 
 	/*
@@ -432,41 +432,41 @@
 	 */
 	if (tft_access) {
 		drvdata->flags |= PLB_ACCESS_FLAG;
-		rc = of_address_to_resource(op->node, 0, &res);
+		rc = of_address_to_resource(op->dev.of_node, 0, &res);
 		if (rc) {
 			dev_err(&op->dev, "invalid address\n");
 			goto err;
 		}
 	} else {
 		res.start = 0;
-		start = dcr_resource_start(op->node, 0);
-		drvdata->dcr_len = dcr_resource_len(op->node, 0);
-		drvdata->dcr_host = dcr_map(op->node, start, drvdata->dcr_len);
+		start = dcr_resource_start(op->dev.of_node, 0);
+		drvdata->dcr_len = dcr_resource_len(op->dev.of_node, 0);
+		drvdata->dcr_host = dcr_map(op->dev.of_node, start, drvdata->dcr_len);
 		if (!DCR_MAP_OK(drvdata->dcr_host)) {
 			dev_err(&op->dev, "invalid DCR address\n");
 			goto err;
 		}
 	}
 
-	prop = of_get_property(op->node, "phys-size", &size);
+	prop = of_get_property(op->dev.of_node, "phys-size", &size);
 	if ((prop) && (size >= sizeof(u32)*2)) {
 		pdata.screen_width_mm = prop[0];
 		pdata.screen_height_mm = prop[1];
 	}
 
-	prop = of_get_property(op->node, "resolution", &size);
+	prop = of_get_property(op->dev.of_node, "resolution", &size);
 	if ((prop) && (size >= sizeof(u32)*2)) {
 		pdata.xres = prop[0];
 		pdata.yres = prop[1];
 	}
 
-	prop = of_get_property(op->node, "virtual-resolution", &size);
+	prop = of_get_property(op->dev.of_node, "virtual-resolution", &size);
 	if ((prop) && (size >= sizeof(u32)*2)) {
 		pdata.xvirt = prop[0];
 		pdata.yvirt = prop[1];
 	}
 
-	if (of_find_property(op->node, "rotate-display", NULL))
+	if (of_find_property(op->dev.of_node, "rotate-display", NULL))
 		pdata.rotate_screen = 1;
 
 	dev_set_drvdata(&op->dev, drvdata);