MFC r347365, r347703

r347365:
Update dme(4) to reflect that it will not be removed due to FCP-101.

dme(4) is the built-in NIC on a couple non-expandable mips platforms and
thus should remain. The FCP has been updated to reflect this fact.

Discussed with: imp

r347703:
FCP-101: ae(4) is sufficently popular to be moved to the keep list.