[MMC] au1xmmc: Fix compilation error by using platform_driver

drivers/mmc/au1xmmc.c currently doesn't compile; it needs to be
converted to use platform_driver.  I cannot test this change because
of lack of hardware but I followed the drivers this one is based on,
and the code is certainly not worse than before.

drivers/mmc/au1xmmc.c: At top level:
drivers/mmc/au1xmmc.c:1002: error: ‘platform_bus_type’ undeclared here (not in a function)
make[2]: *** [drivers/mmc/au1xmmc.o] Error 1
Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/mmc/au1xmmc.c

@@ -37,7 +37,7 @@
 #include <linux/config.h>
 #include <linux/module.h>
 #include <linux/init.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
 #include <linux/dma-mapping.h>
@@ -887,7 +887,7 @@ struct mmc_host_ops au1xmmc_ops = {
 	.set_ios	= au1xmmc_set_ios,
 };
 
-static int au1xmmc_probe(struct device *dev)
+static int __devinit au1xmmc_probe(struct platform_device *pdev)
 {
 
 	int i, ret = 0;
@@ -904,7 +904,7 @@ static int au1xmmc_probe(struct device *dev)
 	disable_irq(AU1100_SD_IRQ);
 
 	for(i = 0; i < AU1XMMC_CONTROLLER_COUNT; i++) {
-		struct mmc_host *mmc = mmc_alloc_host(sizeof(struct au1xmmc_host), dev);
+		struct mmc_host *mmc = mmc_alloc_host(sizeof(struct au1xmmc_host), &pdev->dev);
 		struct au1xmmc_host *host = 0;
 
 		if (!mmc) {
@@ -967,7 +967,7 @@ static int au1xmmc_probe(struct device *dev)
 	return 0;
 }
 
-static int au1xmmc_remove(struct device *dev)
+static int __devexit au1xmmc_remove(struct platform_device *pdev)
 {
 
 	int i;
@@ -997,23 +997,24 @@ static int au1xmmc_remove(struct device *dev)
 	return 0;
 }
 
-static struct device_driver au1xmmc_driver = {
-	.name          = DRIVER_NAME,
-	.bus           = &platform_bus_type,
+static struct platform_driver au1xmmc_driver = {
 	.probe         = au1xmmc_probe,
 	.remove        = au1xmmc_remove,
 	.suspend       = NULL,
-	.resume        = NULL
+	.resume        = NULL,
+	.driver        = {
+		.name  = DRIVER_NAME,
+	},
 };
 
 static int __init au1xmmc_init(void)
 {
-	return driver_register(&au1xmmc_driver);
+	return platform_driver_register(&au1xmmc_driver);
 }
 
 static void __exit au1xmmc_exit(void)
 {
-	driver_unregister(&au1xmmc_driver);
+	platform_driver_unregister(&au1xmmc_driver);
 }
 
 module_init(au1xmmc_init);