Revert "lenovo/t400/4.5-1564-g6fa36c9c2c-dirty/2017-04-16T13_28_27Z"

This reverts commit e5454d36ca2f96e452a228db9a1485bff2e8f32e.

The commit in question deletes a lot of unrelated files, and needs to be
reverted.
diff --git a/asus/kfsn4-dre/4.3-375-g73f7069/2016-03-05T19_11_35Z/rom_checksum.txt b/asus/kfsn4-dre/4.3-375-g73f7069/2016-03-05T19_11_35Z/rom_checksum.txt
new file mode 100644
index 0000000..a2b3ef1
--- /dev/null
+++ b/asus/kfsn4-dre/4.3-375-g73f7069/2016-03-05T19_11_35Z/rom_checksum.txt
@@ -0,0 +1 @@
+e602bc31c138eb79c83b06e651832654 *build/coreboot.rom