
Use bus_dmamap_load_mbuf() instead of bus_dmamap_load() when
we want too load an mbuf; remove a printf that fires in case
we can't load the mbuf (We do error handling and recovery).

ok brad@, dlg@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars