[Feature] add GA346 baseline version

Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/Documentation/ABI/testing/sysfs-bus-mmc b/src/kernel/linux/v4.19/Documentation/ABI/testing/sysfs-bus-mmc
new file mode 100644
index 0000000..519f028
--- /dev/null
+++ b/src/kernel/linux/v4.19/Documentation/ABI/testing/sysfs-bus-mmc
@@ -0,0 +1,4 @@
+What:		/sys/bus/mmc/devices/.../rev
+Date:		October 2017
+Contact:	Jin Qian <jinqian@android.com>
+Description:	Extended CSD revision number