ASoC: audio-graph-card2: add support for aux devices

Add device tree property to define auxiliary devices to be added to
Audio Graph Card which is already supported on Simle Card.

Signed-off-by: Kuninori Morimoto <[e-mail]>
Link: https://msgid.link/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/generic/audio-graph-card2.c

···
 
 	simple_util_debug_info(priv);
 
+	ret = snd_soc_of_parse_aux_devs(card, "aux-devs");
+	if (ret < 0)
+		goto err;
+
 	ret = devm_snd_soc_register_card(dev, card);
 err:
 	devm_kfree(dev, li);