util: hostcpu: Only define /dev/kvm path once
util: hostcpu: Only define /dev/kvm path once

Remove the local kvmpath variable from
virHostCPUGetThreadsPerSubcore() and use the file-global
KVM_DEVICE define instead.

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