Wether we use a software MMU or not to set the SSH timeout
isn't really relevant. What we want to know is if we use
a hardware or software accelerator (TCG).
Replace the 'softmmu' mention by 'TCG'.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231002145104.52193-2-philmd@linaro.org>