mb/google/brya/var/mithrax: update overridetree and Kconfig

1. Update override devicetree based on schematics.
2. Update Kconfig based on schematics.

BUG=b:229191897
TEST=emerge-brya coreboot chromeos-bootimage

Signed-off-by: John Su <john_su@compal.corp-partner.google.com>
Change-Id: Ia28ae16f609fda6d90558e69b2d41139dbe533fd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64329
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Frank Wu <frank_wu@compal.corp-partner.google.com>

0 files changed, 0 insertions, 0 deletions