ASoC: Replace remaining uses of snd_soc_cnew with snd_soc_add_controls.

The drivers are basically duplicating the same code over and over.
As snd_soc_cnew is going to be made static some time after the next
merge window, we might as well convert them now.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm8400.c b/sound/soc/codecs/wm8400.c
index 4e1ceff..744e0dc 100644
--- a/sound/soc/codecs/wm8400.c
+++ b/sound/soc/codecs/wm8400.c
@@ -351,16 +351,8 @@
 /* add non dapm controls */
 static int wm8400_add_controls(struct snd_soc_codec *codec)
 {
-	int err, i;
-
-	for (i = 0; i < ARRAY_SIZE(wm8400_snd_controls); i++) {
-		err = snd_ctl_add(codec->card,
-				snd_soc_cnew(&wm8400_snd_controls[i],codec,
-					NULL));
-		if (err < 0)
-			return err;
-	}
-	return 0;
+	return snd_soc_add_controls(codec, wm8400_snd_controls,
+				ARRAY_SIZE(wm8400_snd_controls));
 }
 
 /*