ASoC: Set idle_bias_off flag in snd_soc_codec_driver

Since commit 33c5f969 "ASoC: Allow idle_bias_off to be specified in CODEC
drivers", now we can set idle_bias_off flag in struct snd_soc_codec_driver
for devices can unconditionally support idle_bias_off.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/sn95031.c b/sound/soc/codecs/sn95031.c
index f99baa0..aa03923 100644
--- a/sound/soc/codecs/sn95031.c
+++ b/sound/soc/codecs/sn95031.c
@@ -827,8 +827,6 @@
 {
 	pr_debug("codec_probe called\n");
 
-	codec->dapm.idle_bias_off = 1;
-
 	/* PCM interface config
 	 * This sets the pcm rx slot conguration to max 6 slots
 	 * for max 4 dais (2 stereo and 2 mono)
@@ -891,6 +889,7 @@
 	.read		= sn95031_read,
 	.write		= sn95031_write,
 	.set_bias_level	= sn95031_set_vaud_bias,
+	.idle_bias_off	= true,
 	.dapm_widgets	= sn95031_dapm_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(sn95031_dapm_widgets),
 	.dapm_routes	= sn95031_audio_map,