ASoC: davinci: davinci-pcm does not need to be a plaform_driver

Same as the commit 518de86 (ASoC: tegra: register 'platform' from DAIs,
get rid of pdev). It makes davinci-pcm not a platform_driver but helper
to register "platform", so that the platform_device for davinci-pcm can
be saved completely.

Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/davinci/davinci-vcif.c b/sound/soc/davinci/davinci-vcif.c
index da030ff..07bde2e 100644
--- a/sound/soc/davinci/davinci-vcif.c
+++ b/sound/soc/davinci/davinci-vcif.c
@@ -240,12 +240,20 @@
 		return ret;
 	}
 
+	ret = davinci_soc_platform_register(&pdev->dev);
+	if (ret) {
+		dev_err(&pdev->dev, "register PCM failed: %d\n", ret);
+		snd_soc_unregister_dai(&pdev->dev);
+		return ret;
+	}
+
 	return 0;
 }
 
 static int davinci_vcif_remove(struct platform_device *pdev)
 {
 	snd_soc_unregister_dai(&pdev->dev);
+	davinci_soc_platform_unregister(&pdev->dev);
 
 	return 0;
 }