mb/google/volteer: Refactor baseboard devicetree
Clean up the DPTF section of the baseboard devicetree; this makes
overrides simpler, as not necessarily all of the fields need to be
overridden.
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: Iad46fd02f7602c9419d7c3674b0d2b6f5add9a93
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45179
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Caveh Jalali <caveh@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>