ASoC: cs42l73: Replace w->codec snd_soc_dapm_to_codec(w->dapm)

The codec field of the snd_soc_widget struct is eventually going to be
removed, use snd_soc_dapm_to_codec(w->dapm) instead.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs42l73.c

@@ -584,7 +584,7 @@ static const struct snd_kcontrol_new cs42l73_snd_controls[] = {
 static int cs42l73_spklo_spk_amp_event(struct snd_soc_dapm_widget *w,
 	struct snd_kcontrol *kcontrol, int event)
 {
-	struct snd_soc_codec *codec = w->codec;
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct cs42l73_private *priv = snd_soc_codec_get_drvdata(codec);
 	switch (event) {
 	case SND_SOC_DAPM_POST_PMD:
@@ -600,7 +600,7 @@ static int cs42l73_spklo_spk_amp_event(struct snd_soc_dapm_widget *w,
 static int cs42l73_ear_amp_event(struct snd_soc_dapm_widget *w,
 	struct snd_kcontrol *kcontrol, int event)
 {
-	struct snd_soc_codec *codec = w->codec;
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct cs42l73_private *priv = snd_soc_codec_get_drvdata(codec);
 	switch (event) {
 	case SND_SOC_DAPM_POST_PMD:
@@ -618,7 +618,7 @@ static int cs42l73_ear_amp_event(struct snd_soc_dapm_widget *w,
 static int cs42l73_hp_amp_event(struct snd_soc_dapm_widget *w,
 	struct snd_kcontrol *kcontrol, int event)
 {
-	struct snd_soc_codec *codec = w->codec;
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct cs42l73_private *priv = snd_soc_codec_get_drvdata(codec);
 	switch (event) {
 	case SND_SOC_DAPM_POST_PMD: