v4.19.13 snapshot.
diff --git a/drivers/net/ethernet/rdc/Makefile b/drivers/net/ethernet/rdc/Makefile
new file mode 100644
index 0000000..8d51fd2
--- /dev/null
+++ b/drivers/net/ethernet/rdc/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the RDC network device drivers.
+#
+
+obj-$(CONFIG_R6040) += r6040.o