PC Engines boards are interfaced mainly via serial console.
Enable SeaBIOS serial console for these boards by default
when SeaBIOS selected as payload.
Change-Id: I9e65dd1e28859028c8c46f28a5442de8c59d4893
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/27824
Tested-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>