"target/s390x/cpu-qom.h" has to be target-agnostic. However, it
currently declares CPUS390XState, which is target-specific.
Move that declaration to "cpu.h".
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20231106114500.5269-5-philmd@linaro.org>