ASoC: soc-core: Fix component name_prefix parsing

The "prefix" can be defined in DAI link node or it can be specified as
part of the component node itself. Currently "sound-name-prefix" defined
in a component is not taking effect. Actually the property is not getting
parsed. It can be fixed by parsing "sound-name-prefix" property whenever
"prefix" is missing in DAI link Codec node.
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Link: https://lore.kernel.org/r/1604329814-24779-2-git-send-email-spujar@nvidia.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-core.c

@@ -1124,7 +1124,8 @@ static void soc_set_name_prefix(struct snd_soc_card *card,
 	for (i = 0; i < card->num_configs; i++) {
 		struct snd_soc_codec_conf *map = &card->codec_conf[i];
 
-		if (snd_soc_is_matching_component(&map->dlc, component)) {
+		if (snd_soc_is_matching_component(&map->dlc, component) &&
+		    map->name_prefix) {
 			component->name_prefix = map->name_prefix;
 			return;
 		}