ASoC: sta32x: minor Kconfig update.

- Add description for the driver
- Add dependency on the I2C module
Signed-off-by: NThomas Niederprüm <niederp@physik.uni-kl.de>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/codecs/Kconfig

@@ -580,7 +580,8 @@ config SND_SOC_SSM4567
 	depends on I2C
 
 config SND_SOC_STA32X
-	tristate
+	tristate "STA326, STA328 and STA329 speaker amplifier"
+	depends on I2C
 	select REGMAP_I2C
 
 config SND_SOC_STA350