These changes make the pm_smbus device work more like the real thing, adding block transfers, I2C block transfers, and interrupts.
It also adds vmstate transfer for the smbus device in patch 5. That patch could probably be left out if that is not desirable. Patch 7 works around a change made to work around an AMIBIOS bug and is necessary for interrupts to work. Patches 9 and 10 add vmstate transfer for SMBus EEPROMs, and obviously requires patch 5 to work properly. These could also be left out.
