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/powerpc/platforms/52xx/mpc52xx_gpio.c b/arch/powerpc/platforms/52xx/mpc52xx_gpio.c
index fda7c2a..576669f 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpio.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpio.c
@@ -168,7 +168,7 @@
 	ofchip->gc.get              = mpc52xx_wkup_gpio_get;
 	ofchip->gc.set              = mpc52xx_wkup_gpio_set;
 
-	ret = of_mm_gpiochip_add(ofdev->node, &chip->mmchip);
+	ret = of_mm_gpiochip_add(ofdev->dev.of_node, &chip->mmchip);
 	if (ret)
 		return ret;
 
@@ -329,7 +329,7 @@
 	ofchip->gc.get              = mpc52xx_simple_gpio_get;
 	ofchip->gc.set              = mpc52xx_simple_gpio_set;
 
-	ret = of_mm_gpiochip_add(ofdev->node, &chip->mmchip);
+	ret = of_mm_gpiochip_add(ofdev->dev.of_node, &chip->mmchip);
 	if (ret)
 		return ret;
 
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
index a60ee39..42c507f 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -734,8 +734,8 @@
 
 	spin_lock_init(&gpt->lock);
 	gpt->dev = &ofdev->dev;
-	gpt->ipb_freq = mpc5xxx_get_bus_frequency(ofdev->node);
-	gpt->regs = of_iomap(ofdev->node, 0);
+	gpt->ipb_freq = mpc5xxx_get_bus_frequency(ofdev->dev.of_node);
+	gpt->regs = of_iomap(ofdev->dev.of_node, 0);
 	if (!gpt->regs) {
 		kfree(gpt);
 		return -ENOMEM;
@@ -743,21 +743,21 @@
 
 	dev_set_drvdata(&ofdev->dev, gpt);
 
-	mpc52xx_gpt_gpio_setup(gpt, ofdev->node);
-	mpc52xx_gpt_irq_setup(gpt, ofdev->node);
+	mpc52xx_gpt_gpio_setup(gpt, ofdev->dev.of_node);
+	mpc52xx_gpt_irq_setup(gpt, ofdev->dev.of_node);
 
 	mutex_lock(&mpc52xx_gpt_list_mutex);
 	list_add(&gpt->list, &mpc52xx_gpt_list);
 	mutex_unlock(&mpc52xx_gpt_list_mutex);
 
 	/* check if this device could be a watchdog */
-	if (of_get_property(ofdev->node, "fsl,has-wdt", NULL) ||
-	    of_get_property(ofdev->node, "has-wdt", NULL)) {
+	if (of_get_property(ofdev->dev.of_node, "fsl,has-wdt", NULL) ||
+	    of_get_property(ofdev->dev.of_node, "has-wdt", NULL)) {
 		const u32 *on_boot_wdt;
 
 		gpt->wdt_mode = MPC52xx_GPT_CAN_WDT;
-		on_boot_wdt = of_get_property(ofdev->node, "fsl,wdt-on-boot",
-					      NULL);
+		on_boot_wdt = of_get_property(ofdev->dev.of_node,
+					      "fsl,wdt-on-boot", NULL);
 		if (on_boot_wdt) {
 			dev_info(gpt->dev, "used as watchdog\n");
 			gpt->wdt_mode |= MPC52xx_GPT_IS_WDT;
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
index d4f8be3..17b99ba 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
@@ -445,14 +445,14 @@
 	if (lpbfifo.dev != NULL)
 		return -ENOSPC;
 
-	lpbfifo.irq = irq_of_parse_and_map(op->node, 0);
+	lpbfifo.irq = irq_of_parse_and_map(op->dev.of_node, 0);
 	if (!lpbfifo.irq)
 		return -ENODEV;
 
-	if (of_address_to_resource(op->node, 0, &res))
+	if (of_address_to_resource(op->dev.of_node, 0, &res))
 		return -ENODEV;
 	lpbfifo.regs_phys = res.start;
-	lpbfifo.regs = of_iomap(op->node, 0);
+	lpbfifo.regs = of_iomap(op->dev.of_node, 0);
 	if (!lpbfifo.regs)
 		return -ENOMEM;