ASoC: snd_soc_dapm_get_pin_status: Match other contexts too

Not all widgets on a card are within the codec's DAPM context. Fix
snd_soc_dapm_get_pin_status to search all contexts when looking for a
widget.

This change is required when modifying tegra_wm8903 to use
snd_soc_card.widgets rather than calling snd_soc_dapm_new_controls; the
former adds the widgets to the card's DAPM context, whereas tegra_wm8903
uses the codec's DAPM context when calling snd_soc_dapm_new_controls.

By code inspection, I suspect this also applies to Samsung Speyside.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NLiam Girdwood <lrg@ti.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/soc-dapm.c

@@ -2403,6 +2403,12 @@ int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
 			return w->connected;
 	}
 
+	/* Try again in other contexts */
+	list_for_each_entry(w, &dapm->card->widgets, list) {
+		if (!strcmp(w->name, pin))
+			return w->connected;
+	}
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);