ASoC: Convert davinci directory to module_platform_driver

Factor out some boilerplate code.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
index 03cea9d..2152ff5 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -991,17 +991,7 @@
 	},
 };
 
-static int __init davinci_mcasp_init(void)
-{
-	return platform_driver_register(&davinci_mcasp_driver);
-}
-module_init(davinci_mcasp_init);
-
-static void __exit davinci_mcasp_exit(void)
-{
-	platform_driver_unregister(&davinci_mcasp_driver);
-}
-module_exit(davinci_mcasp_exit);
+module_platform_driver(davinci_mcasp_driver);
 
 MODULE_AUTHOR("Steve Chen");
 MODULE_DESCRIPTION("TI DAVINCI McASP SoC Interface");