replace a incorrect number with a proper define. this is a no-op change since E1000_FDX_COLLISION_DISTANCE and E1000_HDX_COLLISION_DISTANCE use the same values.
replace a incorrect number with a proper define. this is a no-op change
since E1000_FDX_COLLISION_DISTANCE and E1000_HDX_COLLISION_DISTANCE
use the same values.

From glebius@FreeBSD

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