ASoC: adau17x1: Replace w->codec with 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>
diff --git a/sound/soc/codecs/adau1781.c b/sound/soc/codecs/adau1781.c
index e9fc00f..aa6a37c 100644
--- a/sound/soc/codecs/adau1781.c
+++ b/sound/soc/codecs/adau1781.c
@@ -174,7 +174,7 @@
 static int adau1781_dejitter_fixup(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 adau *adau = snd_soc_codec_get_drvdata(codec);
 
 	/* After any power changes have been made the dejitter circuit