ASoC: Add initial WM8962 CODEC driver

The WM8962 is a low power, high performance stereo CODEC designed for
portable digital audio applications.

This initial driver release supports the key audio paths of the WM8962.
Extended functionality, such as microphone detection, digital microphones
and the advanced DSP signal enhancements provided by the device are not
yet supported.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 83f5c67..bfdd92b 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -61,6 +61,7 @@
 	select SND_SOC_WM8955 if I2C
 	select SND_SOC_WM8960 if I2C
 	select SND_SOC_WM8961 if I2C
+	select SND_SOC_WM8962 if I2C
 	select SND_SOC_WM8971 if I2C
 	select SND_SOC_WM8974 if I2C
 	select SND_SOC_WM8978 if I2C
@@ -248,6 +249,9 @@
 config SND_SOC_WM8961
 	tristate
 
+config SND_SOC_WM8962
+	tristate
+
 config SND_SOC_WM8971
 	tristate