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-i2s.c b/sound/soc/davinci/davinci-i2s.c
index 0a74b95..407df72 100644
--- a/sound/soc/davinci/davinci-i2s.c
+++ b/sound/soc/davinci/davinci-i2s.c
@@ -732,8 +732,16 @@
 	if (ret != 0)
 		goto err_release_clk;
 
+	ret = davinci_soc_platform_register(&pdev->dev);
+	if (ret) {
+		dev_err(&pdev->dev, "register PCM failed: %d\n", ret);
+		goto err_unregister_dai;
+	}
+
 	return 0;
 
+err_unregister_dai:
+	snd_soc_unregister_dai(&pdev->dev);
 err_release_clk:
 	clk_disable(dev->clk);
 	clk_put(dev->clk);
@@ -745,6 +753,8 @@
 	struct davinci_mcbsp_dev *dev = dev_get_drvdata(&pdev->dev);
 
 	snd_soc_unregister_dai(&pdev->dev);
+	davinci_soc_platform_unregister(&pdev->dev);
+
 	clk_disable(dev->clk);
 	clk_put(dev->clk);
 	dev->clk = NULL;