ASoC: bt-sco: add config prompt

Add config prompt for bt-sco codec driver

Signed-off-by: Garlic Tseng <garlic.tseng@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 4d82a58..3ba998a 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -371,7 +371,7 @@
 	tristate
 
 config SND_SOC_BT_SCO
-	tristate
+	tristate "Dummy BT SCO codec driver"
 
 config SND_SOC_CQ0093VC
 	tristate