ASoC: Convert CODEC drivers to module_platform_driver

Factors out a bit of boilerplate.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm8727.c

@@ -67,17 +67,7 @@ static struct platform_driver wm8727_codec_driver = {
 	.remove = __devexit_p(wm8727_remove),
 };
 
-static int __init wm8727_init(void)
-{
-	return platform_driver_register(&wm8727_codec_driver);
-}
-module_init(wm8727_init);
-
-static void __exit wm8727_exit(void)
-{
-	platform_driver_unregister(&wm8727_codec_driver);
-}
-module_exit(wm8727_exit);
+module_platform_driver(wm8727_codec_driver);
 
 MODULE_DESCRIPTION("ASoC wm8727 driver");
 MODULE_AUTHOR("Neil Jones");