mb/google/brya: Create taniks variant

mb/google/brya: Create taniks variant

Create the taniks variant of the brya0 reference board by copying
the template files to a new directory named for the variant.

(Auto-Generated by create_coreboot_variant.sh version 4.5.0.)

BUG=b:207402720
BRANCH=None
TEST=util/abuild/abuild -p none -t google/brya -x -a
make sure the build includes GOOGLE_TANIKS

Signed-off-by: Joey Peng <joey.peng@lcfc.corp-partner.google.com>
Change-Id: I797051f93019ccf72f1007d9c0b98cfb071717b0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59643
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>