ASoC: Route all bias level updates through the core

Use the new snd_soc_codec_force_bias_level() helper function to invoke the
bias_level callback of a driver instead of calling the callback by hand.
Currently the effect of this is the same, but having all bias level updates
go through a central place will allow us to move more of the bias level
management into the DAPM core.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5640.c

@@ -1939,7 +1939,7 @@ static int rt5640_probe(struct snd_soc_codec *codec)
 
 	rt5640->codec = codec;
 
-	rt5640_set_bias_level(codec, SND_SOC_BIAS_OFF);
+	snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_OFF);
 
 	snd_soc_update_bits(codec, RT5640_DUMMY1, 0x0301, 0x0301);
 	snd_soc_update_bits(codec, RT5640_MICBIAS, 0x0030, 0x0030);
@@ -1991,7 +1991,7 @@ static int rt5640_suspend(struct snd_soc_codec *codec)
 {
 	struct rt5640_priv *rt5640 = snd_soc_codec_get_drvdata(codec);
 
-	rt5640_set_bias_level(codec, SND_SOC_BIAS_OFF);
+	snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_OFF);
 	rt5640_reset(codec);
 	regcache_cache_only(rt5640->regmap, true);
 	regcache_mark_dirty(rt5640->regmap);