This check can be done in a much shorter way in meson.build

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201118171052.308191-4-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>