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/emulation/qemu-q35/4.4-624-g4c1cb42/2016-06-27T18_16_47Z/rom_checksum.txt b/emulation/qemu-q35/4.4-624-g4c1cb42/2016-06-27T18_16_47Z/rom_checksum.txt
new file mode 100644
index 0000000..3b1e452
--- /dev/null
+++ b/emulation/qemu-q35/4.4-624-g4c1cb42/2016-06-27T18_16_47Z/rom_checksum.txt
@@ -0,0 +1 @@
+36db68a380e9bcbe0469c907ef3e1bfe *build/coreboot.rom