ASoC: ak4671: Convert to table based control init

Saves code and adds error handling.
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/ak4671.c

@@ -628,9 +628,6 @@ static int ak4671_probe(struct snd_soc_codec *codec)
 		return ret;
 	}
 
-	snd_soc_add_codec_controls(codec, ak4671_snd_controls,
-			     ARRAY_SIZE(ak4671_snd_controls));
-
 	ak4671_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 
 	return ret;
@@ -646,6 +643,8 @@ static struct snd_soc_codec_driver soc_codec_dev_ak4671 = {
 	.probe = ak4671_probe,
 	.remove = ak4671_remove,
 	.set_bias_level = ak4671_set_bias_level,
+	.controls = ak4671_snd_controls,
+	.num_controls = ARRAY_SIZE(ak4671_snd_controls),
 	.reg_cache_size = AK4671_CACHEREGNUM,
 	.reg_word_size = sizeof(u8),
 	.reg_cache_default = ak4671_reg,