qemu: Clean up qemuDomainAttachHostPCIDevice()
qemu: Clean up qemuDomainAttachHostPCIDevice()

We use hostdev->info frequently enough that having
a shorter name for it makes the code more readable.
We will also be adding even more uses later on.

Signed-off-by: Andrea Bolognani <3ada0bee826c753786fdbba72243dfba997094cf@redhat.com>
Reviewed-by: Laine Stump <c23361c43fbf79fed83e8b76173707b083d6caf5@laine.org>

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