If devices can unconditionally support idle_bias_off let them flag it in
their driver structure.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
        /* codec bias level */
        int (*set_bias_level)(struct snd_soc_codec *,
                              enum snd_soc_bias_level level);
+       bool idle_bias_off;
 
        void (*seq_notifier)(struct snd_soc_dapm_context *,
                             enum snd_soc_dapm_type, int);
 
                snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
                                          driver->num_dapm_widgets);
 
+       codec->dapm.idle_bias_off = driver->idle_bias_off;
+
        if (driver->probe) {
                ret = driver->probe(codec);
                if (ret < 0) {