ASoC: soc-topology.c: add comment for Platform/Codec

Not only Platform but Codec also might be overwritten on Topology.
This patch adds comment about it not to use asoc_dummy_dlc here.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/87sfcqyphq.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org

sound/soc/soc-topology.c

@@ -1693,10 +1693,7 @@ static int soc_tplg_fe_link_create(struct soc_tplg *tplg,
 	dlc = (struct snd_soc_dai_link_component *)(link + 1);
 
 	link->cpus	= &dlc[0];
-	link->codecs	= &dlc[1];
-
 	link->num_cpus	 = 1;
-	link->num_codecs = 1;
 
 	link->dobj.index = tplg->index;
 	link->dobj.type = SND_SOC_DOBJ_DAI_LINK;
@@ -1721,16 +1718,19 @@ static int soc_tplg_fe_link_create(struct soc_tplg *tplg,
 		}
 	}
 
-	link->codecs->name = "snd-soc-dummy";
-	link->codecs->dai_name = "snd-soc-dummy-dai";
-
 	/*
-	 * Many topology is assuming link has Platform.
-	 * This might be overwritten at soc_tplg_dai_link_load().
+	 * Many topology are assuming link has Codec / Platform, and
+	 * these might be overwritten at soc_tplg_dai_link_load().
+	 * Don't use &asoc_dummy_dlc here.
 	 */
-	link->platforms	= &dlc[2];
-	link->platforms->name = "snd-soc-dummy";
-	link->num_platforms = 1;
+	link->codecs		= &dlc[1];	/* Don't use &asoc_dummy_dlc here */
+	link->codecs->name	= "snd-soc-dummy";
+	link->codecs->dai_name	= "snd-soc-dummy-dai";
+	link->num_codecs	= 1;
+
+	link->platforms		= &dlc[2];	/* Don't use &asoc_dummy_dlc here */
+	link->platforms->name	= "snd-soc-dummy";
+	link->num_platforms	= 1;
 
 	/* enable DPCM */
 	link->dynamic = 1;