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/4.3-517-g805d44f/2016-03-15T17_24_41Z/rom_checksum.txt b/asus/kfsn4-dre/4.3-517-g805d44f/2016-03-15T17_24_41Z/rom_checksum.txt
new file mode 100644
index 0000000..918450a
--- /dev/null
+++ b/asus/kfsn4-dre/4.3-517-g805d44f/2016-03-15T17_24_41Z/rom_checksum.txt
@@ -0,0 +1 @@
+9e4d04371da69cb6601d5a0fbfdfd0e0 *build/coreboot.rom