ASoC: xlnx: enable i2s driver build

Enabled i2s driver build option.
Signed-off-by: Maruthi Srinivas Bayyavarapu <maruthi.srinivas.bayyavarapu@xilinx.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/Kconfig

@@ -73,6 +73,7 @@ source "sound/soc/tegra/Kconfig"
 source "sound/soc/txx9/Kconfig"
 source "sound/soc/uniphier/Kconfig"
 source "sound/soc/ux500/Kconfig"
+source "sound/soc/xilinx/Kconfig"
 source "sound/soc/xtensa/Kconfig"
 source "sound/soc/zte/Kconfig"
 

sound/soc/Makefile

@@ -57,5 +57,6 @@ obj-$(CONFIG_SND_SOC)	+= tegra/
 obj-$(CONFIG_SND_SOC)	+= txx9/
 obj-$(CONFIG_SND_SOC)	+= uniphier/
 obj-$(CONFIG_SND_SOC)	+= ux500/
+obj-$(CONFIG_SND_SOC)	+= xilinx/
 obj-$(CONFIG_SND_SOC)	+= xtensa/
 obj-$(CONFIG_SND_SOC)	+= zte/

sound/soc/xilinx/Kconfig

+config SND_SOC_XILINX_I2S
+	tristate "Audio support for the the Xilinx I2S"
+	help
+	  Select this option to enable Xilinx I2S Audio. This enables
+	  I2S playback and capture using xilinx soft IP. In transmitter
+	  mode, IP receives audio in AES format, extracts PCM and sends
+	  PCM data. In receiver mode, IP receives PCM audio and
+	  encapsulates PCM in AES format and sends AES data.

sound/soc/xilinx/Makefile

+snd-soc-xlnx-i2s-objs      := xlnx_i2s.o
+obj-$(CONFIG_SND_SOC_XILINX_I2S) += snd-soc-xlnx-i2s.o