ASoC: Add prompt for ICS43432 codec

Without a prompt string, a config setting can't be included in a
defconfig. Give CONFIG_SND_SOC_ICS43432 a prompt so that Pi soundcards
can use the driver.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>

Author: Phil Elwell

sound/soc/codecs/Kconfig

@@ -579,7 +579,7 @@ config SND_SOC_HDAC_HDMI
 	select HDMI
 
 config SND_SOC_ICS43432
-	tristate
+	tristate "InvenSense ICS43432 I2S microphone codec"
 
 config SND_SOC_INNO_RK3036
 	tristate "Inno codec driver for RK3036 SoC"