ASoC: Add support for the WM8727 DAC.

Add support for the Wolfson Microelectronics WM8727 DAC, this is a simple
non-configurable DAC.

Signed-off-by: Neil Jones <neil.jones@imgtec.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 3df3497..4a3e8dc 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -40,6 +40,7 @@
 	select SND_SOC_WM8523 if I2C
 	select SND_SOC_WM8580 if I2C
 	select SND_SOC_WM8711 if SND_SOC_I2C_AND_SPI
+	select SND_SOC_WM8727
 	select SND_SOC_WM8728 if SND_SOC_I2C_AND_SPI
 	select SND_SOC_WM8731 if SND_SOC_I2C_AND_SPI
 	select SND_SOC_WM8750 if SND_SOC_I2C_AND_SPI
@@ -174,6 +175,9 @@
 config SND_SOC_WM8711
 	tristate
 
+config SND_SOC_WM8727
+	tristate
+
 config SND_SOC_WM8728
 	tristate