ASoc: codecs: max98373: remove Idle_bias_on to let codec suspend

Idle_bias_on is used to decide bias on/off in standby state by dapm.
When Idle_bias_on is set to one, dapm will keep max98373 active at
idle time. Max98373 is doing nothing in this state, so remove
idle_bias_on setting to let max98373 get suspended when it is idle.
Signed-off-by: randerwang <rander.wang@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ryan Lee <ryans.lee@maximintegrated.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200707205740.114927-4-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/max98373.c

@@ -862,7 +862,6 @@ static const struct snd_soc_component_driver soc_codec_dev_max98373 = {
 	.num_dapm_widgets	= ARRAY_SIZE(max98373_dapm_widgets),
 	.dapm_routes		= max98373_audio_map,
 	.num_dapm_routes	= ARRAY_SIZE(max98373_audio_map),
-	.idle_bias_on		= 1,
 	.use_pmdown_time	= 1,
 	.endianness		= 1,
 	.non_legacy_dai_naming	= 1,