Add initial devicetree config for karis.
It's copied from rex0 and only for initial settings, will update more
settings afterward.
BUG=b:294155897
TEST=emerge-rex coreboot
Change-Id: I89585a86e8afe636d3927a21a64451b59591acda
Signed-off-by: Tyler Wang <tyler.wang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77203
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
3c4346fc8d