mb/google/dedede: Create taranza variant

mb/google/dedede: Create taranza variant

Create the taranza variant of the waddledee 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:277664211
BRANCH=dedede
TEST=util/abuild/abuild -p none -t google/dedede -x -a
make sure the build includes GOOGLE_TARANZA

Change-Id: Id64e48ff2acd6e827fe586a00376183930ddc7e1
Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74295
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>