drivercore: Add helper macro for platform_driver boilerplate

For simple modules that contain a single platform_driver without any
additional setup code then ends up being a block of duplicated
boilerplate.  This patch adds a new macro, module_platform_driver(),
which replaces the module_init()/module_exit() registrations with
template functions.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Reviewed-by: Magnus Damm <magnus.damm@gmail.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c
index 11515c5..0a282e5 100644
--- a/drivers/spi/spi-ep93xx.c
+++ b/drivers/spi/spi-ep93xx.c
@@ -1026,7 +1026,7 @@
 		free_page((unsigned long)espi->zeropage);
 }
 
-static int __init ep93xx_spi_probe(struct platform_device *pdev)
+static int __devinit ep93xx_spi_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct ep93xx_spi_info *info;
@@ -1151,7 +1151,7 @@
 	return error;
 }
 
-static int __exit ep93xx_spi_remove(struct platform_device *pdev)
+static int __devexit ep93xx_spi_remove(struct platform_device *pdev)
 {
 	struct spi_master *master = platform_get_drvdata(pdev);
 	struct ep93xx_spi *espi = spi_master_get_devdata(master);
@@ -1197,20 +1197,10 @@
 		.name	= "ep93xx-spi",
 		.owner	= THIS_MODULE,
 	},
-	.remove		= __exit_p(ep93xx_spi_remove),
+	.probe		= ep93xx_spi_probe,
+	.remove		= __devexit_p(ep93xx_spi_remove),
 };
-
-static int __init ep93xx_spi_init(void)
-{
-	return platform_driver_probe(&ep93xx_spi_driver, ep93xx_spi_probe);
-}
-module_init(ep93xx_spi_init);
-
-static void __exit ep93xx_spi_exit(void)
-{
-	platform_driver_unregister(&ep93xx_spi_driver);
-}
-module_exit(ep93xx_spi_exit);
+module_platform_driver(ep93xx_spi_driver);
 
 MODULE_DESCRIPTION("EP93xx SPI Controller driver");
 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");