mb/google/oak: Don't build the ChromeEC codebase by default

Currently, the oak boards are the only boards that build the ChromeEC
by default as a part of the coreboot build.

As a part of replacing the chromeec submodule with a different build
mechanism, disable this default.

Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: Idd4fe45e52dbdd1c8dccf0d2c09d5cf6d61aa839
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81023
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Yidi Lin <yidilin@google.com>

0 files changed, 0 insertions, 0 deletions