[Feature] add GA346 baseline version

Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/fs/overlayfs/Makefile b/src/kernel/linux/v4.19/fs/overlayfs/Makefile
new file mode 100644
index 0000000..46e1ff8
--- /dev/null
+++ b/src/kernel/linux/v4.19/fs/overlayfs/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for the overlay filesystem.
+#
+
+obj-$(CONFIG_OVERLAY_FS) += overlay.o
+
+overlay-objs := super.o namei.o util.o inode.o file.o dir.o readdir.o \
+		copy_up.o export.o