soc/intel/meteorlake: Allow configuring 8254 timer via CMOS

Currently, the `USE_LEGACY_8254_TIMER` Kconfig option is the only way
to enable or disable the legacy 8254 timer. Add the `legacy_8254_timer`
CMOS option to allow enabling and disabling the 8254 timer without
having to rebuild and reflash coreboot. If options are not enabled or
the option is missing in cmos.layout, the Kconfig setting is used.

BUG=none
TEST=Build and Boot verified on google/rex

Port of 'commit bc35bed18eba ("soc/intel/*: Allow configuring
8254 timer via CMOS")'

Signed-off-by: Dinesh Gehlot <digehlot@google.com>
Change-Id: Ibf6c43ddecb3da325c22228205243bb6af00d1d2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70423
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions