ASoC: add DAI and platform / DMA drivers for SH SIU

Several SuperH platforms, including sh7722, sh7343, sh7354, sh7367 include
a Sound Interface Unit (SIU). This patch adds DAI and platform / DMA
drivers for this interface.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/sh/Kconfig b/sound/soc/sh/Kconfig
index 8072a6d..3f1cd55 100644
--- a/sound/soc/sh/Kconfig
+++ b/sound/soc/sh/Kconfig
@@ -26,6 +26,12 @@
 	help
 	  This option enables FSI sound support
 
+config SND_SOC_SH4_SIU
+	tristate
+	depends on (SUPERH || ARCH_SHMOBILE) && HAVE_CLK
+	select DMADEVICES
+	select SH_DMAE
+
 ##
 ## Boards
 ##