news: Update our NEWS file about addition of the mdevs
news: Update our NEWS file about addition of the mdevs

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

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