ASoC: Convert omap directory to module_platform_driver

Factor out some boilerplate code.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/omap/omap-mcpdm.c b/sound/soc/omap/omap-mcpdm.c
index cc8ceff..b50ac60 100644
--- a/sound/soc/omap/omap-mcpdm.c
+++ b/sound/soc/omap/omap-mcpdm.c
@@ -520,17 +520,7 @@
 	.remove	= __devexit_p(asoc_mcpdm_remove),
 };
 
-static int __init snd_omap_mcpdm_init(void)
-{
-	return platform_driver_register(&asoc_mcpdm_driver);
-}
-module_init(snd_omap_mcpdm_init);
-
-static void __exit snd_omap_mcpdm_exit(void)
-{
-	platform_driver_unregister(&asoc_mcpdm_driver);
-}
-module_exit(snd_omap_mcpdm_exit);
+module_platform_driver(asoc_mcpdm_driver);
 
 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
 MODULE_DESCRIPTION("OMAP PDM SoC Interface");