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/gardenia/4.5-762-g49342cd/2017-01-06T16_30_58Z/revision.txt b/amd/gardenia/4.5-762-g49342cd/2017-01-06T16_30_58Z/revision.txt
new file mode 100644
index 0000000..d21fec2
--- /dev/null
+++ b/amd/gardenia/4.5-762-g49342cd/2017-01-06T16_30_58Z/revision.txt
@@ -0,0 +1,5 @@
+Local revision: 49342cd
+Tagged revision: 4.5-762-g49342cd
+Upstream revision: 49342cd
+Upstream URL: review.coreboot.org:29418/coreboot
+Timestamp: 2017-01-06T16_30_58Z