[Feature]add MT2731_MP2_MR2_SVN388 baseline version

Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/Documentation/sound/designs/index.rst b/src/kernel/linux/v4.14/Documentation/sound/designs/index.rst
new file mode 100644
index 0000000..f074994
--- /dev/null
+++ b/src/kernel/linux/v4.14/Documentation/sound/designs/index.rst
@@ -0,0 +1,16 @@
+Designs and Implementations
+===========================
+
+.. toctree::
+   :maxdepth: 2
+
+   control-names
+   channel-mapping-api
+   compress-offload
+   timestamping
+   jack-controls
+   tracepoints
+   procfile
+   powersave
+   oss-emulation
+   seq-oss