Better diagnostic message on MVME188 interrupt handler, when we are unable to fetch the VMEbus interrupt vector in time.
Better diagnostic message on MVME188 interrupt handler, when we are unable to
fetch the VMEbus interrupt vector in time.

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