ASoC: add RT5651 CODEC driver

This patch adds the Realtek ALC5651 codec driver.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index f0e8401..deba71b 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -71,6 +71,7 @@
 	select SND_SOC_PCM512x_SPI if SPI_MASTER
 	select SND_SOC_RT5631 if I2C
 	select SND_SOC_RT5640 if I2C
+	select SND_SOC_RT5651 if I2C
 	select SND_SOC_SGTL5000 if I2C
 	select SND_SOC_SI476X if MFD_SI476X_CORE
 	select SND_SOC_SIRF_AUDIO_CODEC
@@ -396,6 +397,9 @@
 config SND_SOC_RT5640
 	tristate
 
+config SND_SOC_RT5651
+	tristate
+
 #Freescale sgtl5000 codec
 config SND_SOC_SGTL5000
 	tristate "Freescale SGTL5000 CODEC"