tests/functional: bail aarch64_virt tests early if missing TCG

The set_machine and require_accelerator steps can bail early so move
those to the front of the test functions. While we are at it also
clean up some long lines when adding the vm arguments.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250108121054.1126164-23-alex.bennee@linaro.org>
1 file changed