Add DLink DGE-550T B1.  Reorganize Marvell Yukon entries & add a few missing ones.  Based on a diff by brad@.
Add DLink DGE-550T B1.  Reorganize Marvell Yukon entries & add a few missing
ones.  Based on a diff by brad@.

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