ASoC: zx-tdm: add zte's tdm controller driver

This patch adds tdm controller driver for zte's SoC family.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Reviewed-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/zte/Kconfig

@@ -15,3 +15,11 @@ config ZX_I2S
 	help
 	  Say Y or M if you want to add support for codecs attached to the
 	  ZTE ZX I2S interface
+
+config ZX_TDM
+        tristate "ZTE ZX TDM Driver Support"
+        depends on COMMON_CLK
+        select SND_SOC_GENERIC_DMAENGINE_PCM
+        help
+          Say Y or M if you want to add support for codecs attached to the
+          ZTE ZX TDM interface

sound/soc/zte/Makefile

 obj-$(CONFIG_ZX_SPDIF)	+= zx-spdif.o
 obj-$(CONFIG_ZX_I2S)	+= zx-i2s.o
+obj-$(CONFIG_ZX_TDM)	+= zx-tdm.o