ASoC: Convert au1x 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/au1x/i2sc.c b/sound/soc/au1x/i2sc.c
index 6bcf48f..cb53ad8 100644
--- a/sound/soc/au1x/i2sc.c
+++ b/sound/soc/au1x/i2sc.c
@@ -331,18 +331,7 @@
 	.remove		= __devexit_p(au1xi2s_drvremove),
 };
 
-static int __init au1xi2s_load(void)
-{
-	return platform_driver_register(&au1xi2s_driver);
-}
-
-static void __exit au1xi2s_unload(void)
-{
-	platform_driver_unregister(&au1xi2s_driver);
-}
-
-module_init(au1xi2s_load);
-module_exit(au1xi2s_unload);
+module_platform_driver(au1xi2s_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Au1000/1500/1100 I2S ASoC driver");