ASoC: pxa: pxa2xx-ac97.c: use devm_snd_soc_register_component()

We have devm_xxx version of snd_soc_register_component,
let's use it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/pxa/pxa2xx-ac97.c

@@ -250,7 +250,7 @@ static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
 	 * driver to do interesting things with the clocking to get us up
 	 * and running.
 	 */
-	return snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
+	return devm_snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
 					  pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver));
 }
 
@@ -258,7 +258,6 @@ static int pxa2xx_ac97_dev_remove(struct platform_device *pdev)
 {
 	struct ac97_controller *ctrl = platform_get_drvdata(pdev);
 
-	snd_soc_unregister_component(&pdev->dev);
 	snd_ac97_controller_unregister(ctrl);
 	pxa2xx_ac97_hw_remove(pdev);
 	return 0;