v4.19.13 snapshot.
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
new file mode 100644
index 0000000..26ab7af
--- /dev/null
+++ b/drivers/mmc/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for the kernel mmc device drivers.
+#
+
+obj-$(CONFIG_MMC)		+= core/
+obj-$(subst m,y,$(CONFIG_MMC))	+= host/