[Feature] add GA346 baseline version

Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/Documentation/admin-guide/pm/system-wide.rst b/src/kernel/linux/v4.19/Documentation/admin-guide/pm/system-wide.rst
new file mode 100644
index 0000000..0c81e4c
--- /dev/null
+++ b/src/kernel/linux/v4.19/Documentation/admin-guide/pm/system-wide.rst
@@ -0,0 +1,8 @@
+============================
+System-Wide Power Management
+============================
+
+.. toctree::
+   :maxdepth: 2
+
+   sleep-states