ASoC: rsnd: rename RSND_DVC_CHANNELS to RSND_MAX_CHANNELS

The channels number is not only for DVC. Let's rename it.

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/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index bbaf89b..61cb4ae 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -550,10 +550,10 @@
 	struct snd_kcontrol *kctrl;
 };
 
-#define RSND_DVC_CHANNELS	8
+#define RSND_MAX_CHANNELS	8
 struct rsnd_kctrl_cfg_m {
 	struct rsnd_kctrl_cfg cfg;
-	u32 val[RSND_DVC_CHANNELS];
+	u32 val[RSND_MAX_CHANNELS];
 };
 
 struct rsnd_kctrl_cfg_s {