ASoC: wm8994: Ensure we get a notification on startup for jackdet

Since jackdet only reports deltas it won't generate an interrupt on startup
when a jack is not present. This doesn't make a difference to userspace
but does mean we don't generate a notification via the internal notifier
chains. Fix that by scheduling a work to poll the chip after the clock is
enabled. Use an extremely large timeout since there's no urgency and we
don't want to report a false negative.

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

sound/soc/codecs/wm8994.h

@@ -81,6 +81,7 @@ struct wm8994_priv {
 	struct completion fll_locked[2];
 	bool fll_locked_irq;
 	bool fll_byp;
+	bool clk_has_run;
 
 	int vmid_refcount;
 	int active_refcount;
@@ -134,6 +135,7 @@ struct wm8994_priv {
 	int btn_mask;
 	bool jackdet;
 	int jackdet_mode;
+	struct delayed_work jackdet_bootstrap;
 
 	wm8958_micdet_cb jack_cb;
 	void *jack_cb_data;