ASoC: Convert sh 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/sh/hac.c b/sound/soc/sh/hac.c
index a1f307b..3474d7b 100644
--- a/sound/soc/sh/hac.c
+++ b/sound/soc/sh/hac.c
@@ -332,17 +332,7 @@
 	.remove = __devexit_p(hac_soc_platform_remove),
 };
 
-static int __init sh4_hac_pcm_init(void)
-{
-	return platform_driver_register(&hac_pcm_driver);
-}
-module_init(sh4_hac_pcm_init);
-
-static void __exit sh4_hac_pcm_exit(void)
-{
-	platform_driver_unregister(&hac_pcm_driver);
-}
-module_exit(sh4_hac_pcm_exit);
+module_platform_driver(hac_pcm_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("SuperH onchip HAC (AC97) audio driver");