ASoC: cs42l56: 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 replace all
other manual access to codec->dapm with snd_soc_codec_get_dapm().
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs42l56.c

@@ -953,7 +953,7 @@ static int cs42l56_set_bias_level(struct snd_soc_codec *codec,
 				    CS42L56_PDN_ALL_MASK, 0);
 		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) {
 			regcache_cache_only(cs42l56->regmap, false);
 			regcache_sync(cs42l56->regmap);
 			ret = regulator_bulk_enable(ARRAY_SIZE(cs42l56->supplies),
@@ -1025,7 +1025,7 @@ static void cs42l56_beep_work(struct work_struct *work)
 	struct cs42l56_private *cs42l56 =
 		container_of(work, struct cs42l56_private, beep_work);
 	struct snd_soc_codec *codec = cs42l56->codec;
-	struct snd_soc_dapm_context *dapm = &codec->dapm;
+	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
 	int i;
 	int val = 0;
 	int best = 0;