hatch: Create ambassador variant

hatch: Create ambassador variant

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

(Auto-Generated by create_coreboot_variant.sh version 4.2.0).

BUG=b:171561514
BRANCH=None
TEST=util/abuild/abuild -p none -t google/hatch -x -a
make sure the build includes GOOGLE_AMBASSADOR

Signed-off-by: Matt Ziegelbaum <ziegs@chromium.org>
Change-Id: Ib0e3a813a120a4a8e984f3a89dc3ba100d94da95
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46829
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>