CB:77409 corrected what the UPD `Timer8254ClkSetting` was set to; this
stopped a few boards from booting.
Selecting USE_LEGACY_8254_TIMER ensures that the previous behaviour is
maintained.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: Ibf898cae6c9fbaf3dc7184eee745278d9b5eade4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78504
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>