kconfig: add blank Kconfig files

This would be useful to start moving various config options.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/fs/Kconfig b/fs/Kconfig
new file mode 100644
index 0000000..41bb0b9
--- /dev/null
+++ b/fs/Kconfig
@@ -0,0 +1,19 @@
+#
+# File system configuration
+#
+
+menu "File systems"
+
+source "fs/ext4/Kconfig"
+
+source "fs/reiserfs/Kconfig"
+
+source "fs/fat/Kconfig"
+
+source "fs/jffs2/Kconfig"
+
+source "fs/ubifs/Kconfig"
+
+source "fs/cramfs/Kconfig"
+
+endmenu