ASoC: rsnd: rename rsnd_dai_get() to rsnd_rdai_get()

struct rsnd_dai is called as "rdai", and struct snd_soc_dai is called
as "dai" on this driver. but macro/function have confusable naming.
This patch rename rsnd_dai_get() to rsnd_rdai_get()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 766bd4c..b4c25d6 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -489,7 +489,7 @@
 	return id;
 }
 
-struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id)
+struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
 {
 	if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 		return NULL;
@@ -501,7 +501,7 @@
 {
 	struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
 
-	return rsnd_dai_get(priv, dai->id);
+	return rsnd_rdai_get(priv, dai->id);
 }
 
 int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io)