ASoC: wm_hubs: Allow configuration of MICBIAS power up delay via pdata

Sometimes the analogue circuitry connected to the microphone needs some
time to settle after power up. Allow systems to configure this delay in
the platform data, the driver will then insert the required delay during
power up of paths that involve the microphone.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm_hubs.h b/sound/soc/codecs/wm_hubs.h
index a5a09e6..24c763d 100644
--- a/sound/soc/codecs/wm_hubs.h
+++ b/sound/soc/codecs/wm_hubs.h
@@ -36,6 +36,9 @@
 	struct list_head dcs_cache;
 	bool (*check_class_w_digital)(struct snd_soc_codec *);
 
+	int micb1_delay;
+	int micb2_delay;
+
 	bool lineout1_se;
 	bool lineout1n_ena;
 	bool lineout1p_ena;
@@ -56,6 +59,7 @@
 					 int lineout1_diff, int lineout2_diff,
 					 int lineout1fb, int lineout2fb,
 					 int jd_scthr, int jd_thr,
+					 int micbias1_dly, int micbias2_dly,
 					 int micbias1_lvl, int micbias2_lvl);
 
 extern irqreturn_t wm_hubs_dcs_done(int irq, void *data);