Add entries to the devicetree override for brya0 and enable the Kconfig
to ensure the Chrome OS EC Mux driver is build tested.
BUG=b:208883648
TEST=None
BRANCH=None
Change-Id: Icf841cd32587f6bd98b15747283b0d331f013532
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64007
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>