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-pcm.c b/sound/soc/davinci/davinci-pcm.c
index d5fe08c..65bff3d 100644
--- a/sound/soc/davinci/davinci-pcm.c
+++ b/sound/soc/davinci/davinci-pcm.c
@@ -886,17 +886,7 @@
 	.remove = __devexit_p(davinci_soc_platform_remove),
 };
 
-static int __init snd_davinci_pcm_init(void)
-{
-	return platform_driver_register(&davinci_pcm_driver);
-}
-module_init(snd_davinci_pcm_init);
-
-static void __exit snd_davinci_pcm_exit(void)
-{
-	platform_driver_unregister(&davinci_pcm_driver);
-}
-module_exit(snd_davinci_pcm_exit);
+module_platform_driver(davinci_pcm_driver);
 
 MODULE_AUTHOR("Vladimir Barinov");
 MODULE_DESCRIPTION("TI DAVINCI PCM DMA module");