smbios: derive Clone for smbios structs
smbios: derive Clone for smbios structs

The derived method matches what we provide, so just use the derived
method instead of unnecessarily creating our own.

BUG=b:244366989
TEST=build, confirm smbios entries still work

Change-Id: Ia5668c4bcf496cfadcc8f7ca153661df6a1d180d
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3881045
Commit-Queue: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>
Auto-Submit: Mike Gerow <a02189a23d721172183c8d36539f51fe4a5d77b4@google.com>
Tested-by: Mike Gerow <a02189a23d721172183c8d36539f51fe4a5d77b4@google.com>
Reviewed-by: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>

google/crosvm,google/crosvm,google/crosvm,google/crosvm