ASoC: tlv320aic31xx: Add text in Kconfig so the codec can be used with simple-card

In order to show the option under 'CODEC drivers' we need to have text in
Kconfig.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: NMark Brown <broonie@linaro.org>

sound/soc/codecs/Kconfig

@@ -533,7 +533,7 @@ config SND_SOC_TLV320AIC26
 	depends on SPI
 
 config SND_SOC_TLV320AIC31XX
-        tristate
+	tristate "Texas Instruments TLV320AIC31xx CODECs"
 	depends on I2C
 	select REGMAP_I2C