ASoC: Convert imx 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/imx/imx-pcm-fiq.c b/sound/soc/imx/imx-pcm-fiq.c
index 8df0fae2..d7ea0b3 100644
--- a/sound/soc/imx/imx-pcm-fiq.c
+++ b/sound/soc/imx/imx-pcm-fiq.c
@@ -331,14 +331,4 @@
 	.remove = __devexit_p(imx_soc_platform_remove),
 };
 
-static int __init snd_imx_pcm_init(void)
-{
-	return platform_driver_register(&imx_pcm_driver);
-}
-module_init(snd_imx_pcm_init);
-
-static void __exit snd_imx_pcm_exit(void)
-{
-	platform_driver_unregister(&imx_pcm_driver);
-}
-module_exit(snd_imx_pcm_exit);
+module_platform_driver(imx_pcm_driver);