ASoC: adau1977: Replace direct snd_soc_codec dapm field access

The dapm field of the snd_soc_codec struct is eventually going to be
removed, in preparation for this replace all manual access to
codec->dapm.bias_level with  snd_soc_codec_get_bias_level() and all
remaining access to codec->dapm with snd_soc_codec_get_dapm().
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/adau1977.c

@@ -485,7 +485,7 @@ static int adau1977_set_bias_level(struct snd_soc_codec *codec,
 	case SND_SOC_BIAS_PREPARE:
 		break;
 	case SND_SOC_BIAS_STANDBY:
-		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
+		if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF)
 			ret = adau1977_power_enable(adau1977);
 		break;
 	case SND_SOC_BIAS_OFF:
@@ -853,12 +853,13 @@ static int adau1977_set_sysclk(struct snd_soc_codec *codec,
 
 static int adau1977_codec_probe(struct snd_soc_codec *codec)
 {
+	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
 	struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(codec);
 	int ret;
 
 	switch (adau1977->type) {
 	case ADAU1977:
-		ret = snd_soc_dapm_new_controls(&codec->dapm,
+		ret = snd_soc_dapm_new_controls(dapm,
 			adau1977_micbias_dapm_widgets,
 			ARRAY_SIZE(adau1977_micbias_dapm_widgets));
 		if (ret < 0)