ASoC: tegra_wm9712: Use card DAPM context to access widgets

The dapm field of the snd_soc_codec struct will eventually be removed
(replaced with the DAPM context from the component embedded inside the
CODEC). Replace its usage with the card's DAPM context. The idea is that
DAPM is hierarchical and with the card at the root it is possible to access
widgets from other contexts through the card context.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/tegra/tegra_wm9712.c

@@ -46,11 +46,7 @@ static const struct snd_soc_dapm_widget tegra_wm9712_dapm_widgets[] = {
 
 static int tegra_wm9712_init(struct snd_soc_pcm_runtime *rtd)
 {
-	struct snd_soc_dai *codec_dai = rtd->codec_dai;
-	struct snd_soc_codec *codec = codec_dai->codec;
-	struct snd_soc_dapm_context *dapm = &codec->dapm;
-
-	return snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
+	return snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias");
 }
 
 static struct snd_soc_dai_link tegra_wm9712_dai = {