Add Platform.TPM{1,2}.CommandAndResponse.Unknown

The corresponding changes on the Chrome OS side is in
crrev.com/c/4030036.

BUG=b:258376841

Change-Id: I9b5d26c8d71941eceeb5e61e50ef32227f71a677
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4054446


Commit-Queue: Ching-Kang Yen <chingkang@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1075565}