ASoC: rt5616: add rt5616 codec driver

This is the initial codec driver for rt5616.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index f22c66b..cdc0d09 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -89,6 +89,7 @@
 	select SND_SOC_PCM512x_SPI if SPI_MASTER
 	select SND_SOC_RT286 if I2C
 	select SND_SOC_RT298 if I2C
+	select SND_SOC_RT5616 if I2C
 	select SND_SOC_RT5631 if I2C
 	select SND_SOC_RT5640 if I2C
 	select SND_SOC_RT5645 if I2C
@@ -524,12 +525,14 @@
 
 config SND_SOC_RL6231
 	tristate
+	default y if SND_SOC_RT5616=y
 	default y if SND_SOC_RT5640=y
 	default y if SND_SOC_RT5645=y
 	default y if SND_SOC_RT5651=y
 	default y if SND_SOC_RT5659=y
 	default y if SND_SOC_RT5670=y
 	default y if SND_SOC_RT5677=y
+	default m if SND_SOC_RT5616=m
 	default m if SND_SOC_RT5640=m
 	default m if SND_SOC_RT5645=m
 	default m if SND_SOC_RT5651=m
@@ -552,6 +555,9 @@
 	tristate
 	depends on I2C
 
+config SND_SOC_RT5616
+	tristate
+
 config SND_SOC_RT5631
 	tristate "Realtek ALC5631/RT5631 CODEC"
 	depends on I2C