ASoC: board driver to connect bf5xx with ad1938

Signed-off-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/blackfin/Kconfig b/sound/soc/blackfin/Kconfig
index 2ab6d2f..8a4de4de 100644
--- a/sound/soc/blackfin/Kconfig
+++ b/sound/soc/blackfin/Kconfig
@@ -96,6 +96,14 @@
 	help
 	  Say Y if you want to add support for SoC audio on BF5xx STAMP/EZKIT.
 
+config SND_BF5XX_SOC_AD1938
+        tristate "SoC AD1938 Audio support for Blackfin"
+        depends on SND_BF5XX_TDM
+        select SND_BF5XX_SOC_TDM
+        select SND_SOC_AD1938
+        help
+          Say Y if you want to add support for AD1938 codec on Blackfin.
+
 config SND_BF5XX_SPORT_NUM
 	int "Set a SPORT for Sound chip"
 	depends on (SND_BF5XX_I2S || SND_BF5XX_AC97 || SND_BF5XX_TDM)