Replace the use of a separate softc field to track the link state with the newly minted link flag in the softc's rl_flags field.
Replace the use of a separate softc field to track the link
state with the newly minted link flag in the softc's rl_flags
field.

Tested by fkr@

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