init overridetree.cb based on the schematic carbine_adl-p_proto_20210618_proto final.pdf
BUG=b:191213263
TEST=USE="project_gimble emerge-brya coreboot" and verify it builds
without error.
Signed-off-by: Mark Hsieh <mark_hsieh@wistron.corp-partner.google.com>
Change-Id: I3f6875ef438b147436605629445d346a56896a87
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55781
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
a96e9cb0b4