ASoC: Convert txx9 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/txx9/txx9aclc-ac97.c b/sound/soc/txx9/txx9aclc-ac97.c
index a4e3f55..28db4ca 100644
--- a/sound/soc/txx9/txx9aclc-ac97.c
+++ b/sound/soc/txx9/txx9aclc-ac97.c
@@ -223,18 +223,7 @@
 	},
 };
 
-static int __init txx9aclc_ac97_init(void)
-{
-	return platform_driver_register(&txx9aclc_ac97_driver);
-}
-
-static void __exit txx9aclc_ac97_exit(void)
-{
-	platform_driver_unregister(&txx9aclc_ac97_driver);
-}
-
-module_init(txx9aclc_ac97_init);
-module_exit(txx9aclc_ac97_exit);
+module_platform_driver(txx9aclc_ac97_driver);
 
 MODULE_AUTHOR("Atsushi Nemoto <anemo@mba.ocn.ne.jp>");
 MODULE_DESCRIPTION("TXx9 ACLC AC97 driver");