ASoC: simple-card-utils: indicate dai_fmt if exist

link->dai_fmt might be 0.
Don't indicate it in such case when debugging.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87mtu4wf9k.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/simple_card_utils.h

@@ -222,9 +222,8 @@ static inline void asoc_simple_debug_info(struct asoc_simple_priv *priv)
 
 		if (link->name)
 			dev_dbg(dev, "dai name = %s\n", link->name);
-
-		dev_dbg(dev, "dai format = %04x\n", link->dai_fmt);
-
+		if (link->dai_fmt)
+			dev_dbg(dev, "dai format = %04x\n", link->dai_fmt);
 		if (props->adata.convert_rate)
 			dev_dbg(dev, "convert_rate = %d\n",
 				props->adata.convert_rate);