SAR-related Kconfigs are only used by ChromeOS, and should be guarded
properly as such (as most other boards do).
TEST=build sarien w/o CONFIG_CHROMEOS, verify SAR-related Kconfigs not
selected.
Change-Id: I424033e087bc37c651a922273718fc229b720448
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68456
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>