qemu: hotplug: Introduce hot plug support for mediated devices
qemu: hotplug: Introduce hot plug support for mediated devices

Mediated devices support hot-{plug,unplug} since their introduction in
kernel 4.10, however libvirt has still been missing support for this.

Signed-off-by: Erik Skultety <2c14d38fa47c8799f1b9c16280abe27f8edfec6e@redhat.com>

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