ASoC: soc-core.c: initialize dlc on snd_soc_get_dai_id()

Current snd_soc_get_dai_id() is initializing dlc *manually*,
but it will might be a problem if dlc had new extra parameter.
This patch uses default initialization, otherwise, non initialized
part will be strange value.
This is prepare for multi Component support.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87pm5pblst.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-core.c

@@ -3235,11 +3235,12 @@ EXPORT_SYMBOL_GPL(snd_soc_get_stream_cpu);
 int snd_soc_get_dai_id(struct device_node *ep)
 {
 	struct snd_soc_component *component;
-	struct snd_soc_dai_link_component dlc;
+	struct snd_soc_dai_link_component dlc = {
+		.of_node = of_graph_get_port_parent(ep),
+	};
 	int ret;
 
-	dlc.of_node	= of_graph_get_port_parent(ep);
-	dlc.name	= NULL;
+
 	/*
 	 * For example HDMI case, HDMI has video/sound port,
 	 * but ALSA SoC needs sound port number only.