ASoC: fsi-ak4642: modify specification method of FSI / ak464x

Current fsi-ak4642 was using id_entry name in order to specify
FSI port and ak464x codec.
But it was no sense, no flexibility.
Platform can specify FSI/ak464x pair by this patch.

Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/include/sound/sh_fsi.h b/include/sound/sh_fsi.h
index 9a155f9..9b1aaca 100644
--- a/include/sound/sh_fsi.h
+++ b/include/sound/sh_fsi.h
@@ -78,4 +78,16 @@
 	int (*set_rate)(struct device *dev, int is_porta, int rate, int enable);
 };
 
+/*
+ * for fsi-ak4642
+ */
+struct fsi_ak4642_info {
+	const char *name;
+	const char *card;
+	const char *cpu_dai;
+	const char *codec;
+	const char *platform;
+	int id;
+};
+
 #endif /* __SOUND_FSI_H */