ASoC: Add S3C64xx IIS CDCLK source selection

CDCLK can either be an output generated by the CPU, intended for use
as the CODEC master clock, or an input (probably from the CODEC)
providing a master clock for the IIS block.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/arch/arm/plat-s3c/include/plat/regs-s3c2412-iis.h b/arch/arm/plat-s3c/include/plat/regs-s3c2412-iis.h
index 07659da..abf2fbc 100644
--- a/arch/arm/plat-s3c/include/plat/regs-s3c2412-iis.h
+++ b/arch/arm/plat-s3c/include/plat/regs-s3c2412-iis.h
@@ -67,6 +67,8 @@
 #define S3C2412_IISMOD_BCLK_MASK	(3 << 1)
 #define S3C2412_IISMOD_8BIT		(1 << 0)
 
+#define S3C64XX_IISMOD_CDCLKCON		(1 << 12)
+
 #define S3C2412_IISPSR_PSREN		(1 << 15)
 
 #define S3C2412_IISFIC_TXFLUSH		(1 << 15)