optionroms: Use revision when finding option rom

Some devices have the same vendor and device id but need different
option rom files. Changed lookup to include revision, then fallback to looking up
without revision.

BUG=b:148125384
TEST=Manual, boot trembyle and confirm SeaBIOS console is displayed.

Change-Id: I4c969b08727077fcb5ca1198e61cc6711c675019
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/seabios/+/2015963
Reviewed-by: Raul E Rangel <rrangel@chromium.org>
Tested-by: Rob Barnes <robbarnes@google.com>
Commit-Queue: Rob Barnes <robbarnes@google.com>
Auto-Submit: Rob Barnes <robbarnes@google.com>
1 file changed