tests/tcg: don't include multiarch tests if not supported

We are about to change the way the plugin runs are done and having
this included by default will complicate things.

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-ID: <20250725154517.3523095-10-alex.bennee@linaro.org>
2 files changed