tests/vm: don't build using TCG by default

While it is useful to run these images using TCG their performance
will not be anything like the native guests. Don't do it by default.

Fixes: https://gitlab.com/qemu-project/qemu/-/issues/393
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211115142915.3797652-4-alex.bennee@linaro.org>
1 file changed