[Feature] add GA346 baseline version

Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/Documentation/driver-api/soundwire/index.rst b/src/kernel/linux/v4.19/Documentation/driver-api/soundwire/index.rst
new file mode 100644
index 0000000..6db0260
--- /dev/null
+++ b/src/kernel/linux/v4.19/Documentation/driver-api/soundwire/index.rst
@@ -0,0 +1,18 @@
+=======================
+SoundWire Documentation
+=======================
+
+.. toctree::
+   :maxdepth: 1
+
+   summary
+   stream
+   error_handling
+   locking
+
+.. only::  subproject
+
+   Indices
+   =======
+
+   * :ref:`genindex`