mb/google/dedede: Create cappy2 variant

mb/google/dedede: Create cappy2 variant

Create the cappy2 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:192035460
BRANCH=None
TEST=util/abuild/abuild -p none -t google/dedede -x -a
make sure the build includes GOOGLE_CAPPY2

Signed-off-by: Sunway <lisunwei@huaqin.corp-partner.google.com>
Change-Id: I772801152b9ca9c2c6afe76a353cb2b62d6210ce
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55886
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>