ASoC: soc-utils: add snd_soc_component_is_dummy()

There is snd_soc_dai_is_dummy(), but not for component.
This patch adds it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87zgxzxa2t.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-component.h

@@ -338,6 +338,7 @@ static inline int snd_soc_component_cache_sync(
 void snd_soc_component_set_aux(struct snd_soc_component *component,
 			       struct snd_soc_aux_dev *aux);
 int snd_soc_component_init(struct snd_soc_component *component);
+int snd_soc_component_is_dummy(struct snd_soc_component *component);
 
 /* component IO */
 unsigned int snd_soc_component_read(struct snd_soc_component *component,

sound/soc/soc-core.c

@@ -1169,7 +1169,7 @@ static int soc_probe_component(struct snd_soc_card *card,
 	int probed = 0;
 	int ret;
 
-	if (!strcmp(component->name, "snd-soc-dummy"))
+	if (snd_soc_component_is_dummy(component))
 		return 0;
 
 	if (component->card) {

sound/soc/soc-utils.c

@@ -131,6 +131,12 @@ int snd_soc_dai_is_dummy(struct snd_soc_dai *dai)
 	return 0;
 }
 
+int snd_soc_component_is_dummy(struct snd_soc_component *component)
+{
+	return ((component->driver == &dummy_platform) ||
+		(component->driver == &dummy_codec));
+}
+
 static int snd_soc_dummy_probe(struct platform_device *pdev)
 {
 	int ret;