ASoC: rsnd: rename rsnd_runtime_is_ssi_xxx()

Current rsnd driver has rsnd_runtime_is_ssi_xxx() functions,
but it is not only related to SSI, thus, it is misunderstandable.
This patch renames it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/rsnd.h

@@ -431,8 +431,8 @@ int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io,
 	rsnd_runtime_channel_for_ssi_with_params(io, NULL)
 int rsnd_runtime_channel_for_ssi_with_params(struct rsnd_dai_stream *io,
 				 struct snd_pcm_hw_params *params);
-int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io);
-int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io);
+int rsnd_runtime_is_multi_ssi(struct rsnd_dai_stream *io);
+int rsnd_runtime_is_tdm(struct rsnd_dai_stream *io);
 
 /*
  * DT