qemu: process: Pin on per-vcpu basis instead of per-vcpupin element
qemu: process: Pin on per-vcpu basis instead of per-vcpupin element

Pin existing vcpus rather than existing vcpu pinning infos. This
increases the complexity of the lookup, but avoids pinning cpus that are
not enabled actually.

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