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/amd/thatcher/4.3-102-g380e167/2016-02-04T18_30_40Z/rom_checksum.txt b/amd/thatcher/4.3-102-g380e167/2016-02-04T18_30_40Z/rom_checksum.txt
new file mode 100644
index 0000000..08c1f0b
--- /dev/null
+++ b/amd/thatcher/4.3-102-g380e167/2016-02-04T18_30_40Z/rom_checksum.txt
@@ -0,0 +1 @@
+c3d1b4a455a0c6bc9f5517610ce01a70 *build/coreboot.rom