accel/tcg: Update CPUNegativeOffsetState::can_do_io field documentation

The @can_do_io field got moved from CPUState to
CPUNegativeOffsetState in commit 464dacf609 ("accel/tcg:
Move can_do_io to CPUNegativeOffsetState").

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240428221450.26460-14-philmd@linaro.org>
1 file changed