ASoC: ADS117x ADC driver

This patch adds support for the TI ADS117x family of multichannel ADCs
and was sponsored by Shotspotter Inc.

Signed-off-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 4a3e8dc..52b005f 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -15,6 +15,7 @@
 	select SND_SOC_AD1836 if SPI_MASTER
 	select SND_SOC_AD1938 if SPI_MASTER
 	select SND_SOC_AD1980 if SND_SOC_AC97_BUS
+	select SND_SOC_ADS117X
 	select SND_SOC_AD73311 if I2C
 	select SND_SOC_AK4104 if SPI_MASTER
 	select SND_SOC_AK4535 if I2C
@@ -91,6 +92,9 @@
 
 config SND_SOC_AD73311
 	tristate
+	
+config SND_SOC_ADS117X
+	tristate
 
 config SND_SOC_AK4104
 	tristate