Turn virDomainDeviceInfoFormat into void
Turn virDomainDeviceInfoFormat into void

The rombar attribute was already validated at the time of parsing
the XML.

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