qemu: use enum when setting PCI "multi" value, not 0 or 1
qemu: use enum when setting PCI "multi" value, not 0 or 1

Use the VIR_TRISTATE_SWITCH_* enums appropriately.

No functional change.

VenkatDatta/libvirt,taget/libvirt,zippy2/libvirt,rlaager/libvirt,datto/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,olafhering/libvirt,eskultety/libvirt,VenkatDatta/libvirt,zippy2/libvirt,andreabolognani/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,eskultety/libvirt,crobinso/libvirt,taget/libvirt,crobinso/libvirt,libvirt/libvirt,jfehlig/libvirt,datto/libvirt,nertpinx/libvirt,libvirt/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,andreabolognani/libvirt,crobinso/libvirt,jardasgit/libvirt,andreabolognani/libvirt,libvirt/libvirt,olafhering/libvirt,zippy2/libvirt,jardasgit/libvirt,taget/libvirt,nertpinx/libvirt,datto/libvirt,olafhering/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,crobinso/libvirt,rlaager/libvirt,rlaager/libvirt,fabianfreyer/libvirt,taget/libvirt,rlaager/libvirt,libvirt/libvirt,zippy2/libvirt,eskultety/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,jfehlig/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,eskultety/libvirt,olafhering/libvirt,nertpinx/libvirt,datto/libvirt,eskultety/libvirt,taget/libvirt,datto/libvirt,rlaager/libvirt,VenkatDatta/libvirt,nertpinx/libvirt