[Feature]add MT2731_MP2_MR2_SVN388 baseline version

Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/soc/zte/Makefile b/src/kernel/linux/v4.14/sound/soc/zte/Makefile
new file mode 100644
index 0000000..1fc841a
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/soc/zte/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_ZX_SPDIF)	+= zx-spdif.o
+obj-$(CONFIG_ZX_I2S)	+= zx-i2s.o
+obj-$(CONFIG_ZX_TDM)	+= zx-tdm.o