This enables us to register the VMStateDescription using the DeviceClass vmsd
property rather than having to call vmstate_register() from i8042_mmio_realize().
Note that this is a migration break for the MIPS magnum machine which is the only
user of the I8042_MMIO device.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Tested-by: Helge Deller <deller@gmx.de>
Acked-by: Helge Deller <deller@gmx.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220712215251.7944-36-mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
abcacb20f7