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/spi_fsl_spi.c b/drivers/spi/spi_fsl_spi.c
index 7ca52d3..7963c9b 100644
--- a/drivers/spi/spi_fsl_spi.c
+++ b/drivers/spi/spi_fsl_spi.c
@@ -1042,8 +1042,7 @@
 	return 0;
 }
 
-static int __devinit of_fsl_spi_probe(struct platform_device *ofdev,
-					const struct of_device_id *ofid)
+static int __devinit of_fsl_spi_probe(struct platform_device *ofdev)
 {
 	struct device *dev = &ofdev->dev;
 	struct device_node *np = ofdev->dev.of_node;
@@ -1052,7 +1051,7 @@
 	struct resource irq;
 	int ret = -ENOMEM;
 
-	ret = of_mpc8xxx_spi_probe(ofdev, ofid);
+	ret = of_mpc8xxx_spi_probe(ofdev);
 	if (ret)
 		return ret;
 
@@ -1100,7 +1099,7 @@
 };
 MODULE_DEVICE_TABLE(of, of_fsl_spi_match);
 
-static struct of_platform_driver of_fsl_spi_driver = {
+static struct platform_driver of_fsl_spi_driver = {
 	.driver = {
 		.name = "fsl_spi",
 		.owner = THIS_MODULE,
@@ -1177,13 +1176,13 @@
 static int __init fsl_spi_init(void)
 {
 	legacy_driver_register();
-	return of_register_platform_driver(&of_fsl_spi_driver);
+	return platform_driver_register(&of_fsl_spi_driver);
 }
 module_init(fsl_spi_init);
 
 static void __exit fsl_spi_exit(void)
 {
-	of_unregister_platform_driver(&of_fsl_spi_driver);
+	platform_driver_unregister(&of_fsl_spi_driver);
 	legacy_driver_unregister();
 }
 module_exit(fsl_spi_exit);