Revert the reduction in the delays in the miibus read/write routines, which broke on-board RTL8111C adapters.
Revert the reduction in the delays in the miibus read/write routines,
which broke on-board RTL8111C adapters.

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