ASoC: core: Allow CODECs to set ignore_pmdown_time in the driver struct

This is usually not a use case dependant flag anyway.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>

include/sound/soc.h

@@ -643,6 +643,8 @@ struct snd_soc_codec_driver {
 	/* codec stream completion event */
 	int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
 
+	bool ignore_pmdown_time;  /* Doesn't benefit from pmdown delay */
+
 	/* probe ordering - for components with runtime dependencies */
 	int probe_order;
 	int remove_order;