dt/spi: Eliminate users of of_platform_{,un}register_driver

Get rid of users of of_platform_driver in drivers/spi.  The
of_platform_{,un}register_driver functions are going away, so the
users need to be converted to using the platform_bus_type directly.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/spi/mpc52xx_psc_spi.c b/drivers/spi/mpc52xx_psc_spi.c
index 8a904c1..e30baf0 100644
--- a/drivers/spi/mpc52xx_psc_spi.c
+++ b/drivers/spi/mpc52xx_psc_spi.c
@@ -450,8 +450,7 @@
 	return ret;
 }
 
-static int __devinit mpc52xx_psc_spi_of_probe(struct platform_device *op,
-	const struct of_device_id *match)
+static int __devinit mpc52xx_psc_spi_of_probe(struct platform_device *op)
 {
 	const u32 *regaddr_p;
 	u64 regaddr64, size64;
@@ -503,7 +502,7 @@
 
 MODULE_DEVICE_TABLE(of, mpc52xx_psc_spi_of_match);
 
-static struct of_platform_driver mpc52xx_psc_spi_of_driver = {
+static struct platform_driver mpc52xx_psc_spi_of_driver = {
 	.probe = mpc52xx_psc_spi_of_probe,
 	.remove = __devexit_p(mpc52xx_psc_spi_of_remove),
 	.driver = {
@@ -515,13 +514,13 @@
 
 static int __init mpc52xx_psc_spi_init(void)
 {
-	return of_register_platform_driver(&mpc52xx_psc_spi_of_driver);
+	return platform_driver_register(&mpc52xx_psc_spi_of_driver);
 }
 module_init(mpc52xx_psc_spi_init);
 
 static void __exit mpc52xx_psc_spi_exit(void)
 {
-	of_unregister_platform_driver(&mpc52xx_psc_spi_of_driver);
+	platform_driver_unregister(&mpc52xx_psc_spi_of_driver);
 }
 module_exit(mpc52xx_psc_spi_exit);