ASoC: tlv320aic31xx: Add dependency for I2C and select REGMAP_I2C in Kconfig

The codec can be configured via I2C and using regmap_i2c.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index cbfa1e1..9115ab8 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -534,6 +534,8 @@
 
 config SND_SOC_TLV320AIC31XX
         tristate
+	depends on I2C
+	select REGMAP_I2C
 
 config SND_SOC_TLV320AIC32X4
 	tristate