extcon: arizona: Allow additional debounce during microphone detection

Help mitigate against mechanical bounce during the initial detection by
allowing the configuration of an additional debounce on top of that the
hardware does during the initial phase of microphone detection operation.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

include/linux/mfd/arizona/pdata.h

@@ -134,6 +134,9 @@ struct arizona_pdata {
 	/** GPIO used for mic isolation with HPDET */
 	int hpdet_id_gpio;
 
+	/** Extra debounce timeout used during initial mic detection (ms) */
+	int micd_detect_debounce;
+
 	/** GPIO for mic detection polarity */
 	int micd_pol_gpio;