ASoC: fsi: Add specified ID for soc-audio

Specified ID is necessary, when some codecs are used with FSI.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/include/sound/sh_fsi.h b/include/sound/sh_fsi.h
index 2c6237e..6ac7186 100644
--- a/include/sound/sh_fsi.h
+++ b/include/sound/sh_fsi.h
@@ -12,6 +12,9 @@
  * published by the Free Software Foundation.
  */
 
+#define FSI_PORT_A	0
+#define FSI_PORT_B	1
+
 /* flags format
 
  * 0xABCDEEFF