Re: [libvirt] [PATCH 2/5] qemu: only check for PIIX3-specific device addrs on pc-* machinetypes

I'm thinking that it would probably be better to move all the re-indented code out into a qemuValidateDevicePCISlotsPIIX3() and just call that function from qemuAssignDevicePCISlots(). That way if we need to add more validation for other machine types in the future, we have a good modular code structure. This would probably make the diff more sane too, since you wouldn't be indenting code.

(Note that, according to the qemuxml2argv-pseries-usb-multi test, ppc "pseries" machines also have a PIIX3 chip (since that test file adds a "piix3-uhci" usb controller). I don't know if this is really the case or not, but had to include that machine type in the checks in order for make check to succeed with no changes to the test data.)