hw/i386/pc: Include missing 'cpu.h' header

Both pc_piix.c and pc_q35.c files use CPU_VERSION_LEGACY
which is defined in "target/i386/cpu.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-3-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 files changed