dt: Eliminate of_platform_{,un}register_driver

Final step to eliminate of_platform_bus_type.  They're all just
platform drivers now.

v2: fix type in pasemi_nand.c (thanks to Stephen Rothwell)

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/watchdog/mpc8xxx_wdt.c b/drivers/watchdog/mpc8xxx_wdt.c
index 8fa213c..ea438ad 100644
--- a/drivers/watchdog/mpc8xxx_wdt.c
+++ b/drivers/watchdog/mpc8xxx_wdt.c
@@ -185,15 +185,18 @@
 	.fops	= &mpc8xxx_wdt_fops,
 };
 
-static int __devinit mpc8xxx_wdt_probe(struct platform_device *ofdev,
-				       const struct of_device_id *match)
+static int __devinit mpc8xxx_wdt_probe(struct platform_device *ofdev)
 {
 	int ret;
 	struct device_node *np = ofdev->dev.of_node;
-	struct mpc8xxx_wdt_type *wdt_type = match->data;
+	struct mpc8xxx_wdt_type *wdt_type;
 	u32 freq = fsl_get_sys_freq();
 	bool enabled;
 
+	if (!ofdev->dev.of_match)
+		return -EINVAL;
+	wdt_type = match->data;
+
 	if (!freq || freq == -1)
 		return -EINVAL;
 
@@ -272,7 +275,7 @@
 };
 MODULE_DEVICE_TABLE(of, mpc8xxx_wdt_match);
 
-static struct of_platform_driver mpc8xxx_wdt_driver = {
+static struct platform_driver mpc8xxx_wdt_driver = {
 	.probe		= mpc8xxx_wdt_probe,
 	.remove		= __devexit_p(mpc8xxx_wdt_remove),
 	.driver = {
@@ -308,13 +311,13 @@
 
 static int __init mpc8xxx_wdt_init(void)
 {
-	return of_register_platform_driver(&mpc8xxx_wdt_driver);
+	return platform_driver_register(&mpc8xxx_wdt_driver);
 }
 arch_initcall(mpc8xxx_wdt_init);
 
 static void __exit mpc8xxx_wdt_exit(void)
 {
-	of_unregister_platform_driver(&mpc8xxx_wdt_driver);
+	platform_driver_unregister(&mpc8xxx_wdt_driver);
 }
 module_exit(mpc8xxx_wdt_exit);