mb/kontron/bsl6: Rework Kconfig

Rework Kconfig file so that each variant has its own config option with
their specific selects / configuration and move common selects to a
seperate config option, which is used as base for each variant.

Built kontron/boxer26 with BUILD_TIMELESS=1, coreboot.rom remains the
same.

Change-Id: I08bd68aa2f98f93b8c5daf1ab2f3c1bbce521c53
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49061
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

0 files changed, 0 insertions, 0 deletions