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/msi/ms7135/4.3-821-g4488d73/2016-04-25T17_51_55Z/rom_checksum.txt b/msi/ms7135/4.3-821-g4488d73/2016-04-25T17_51_55Z/rom_checksum.txt
new file mode 100644
index 0000000..ce745cd
--- /dev/null
+++ b/msi/ms7135/4.3-821-g4488d73/2016-04-25T17_51_55Z/rom_checksum.txt
@@ -0,0 +1 @@
+3fbc5405f2e5cf3467db3541ab2640f9 *build/coreboot.rom