K 10 svn:author V 5 sephe K 8 svn:date V 27 2016-11-14T06:03:29.883040Z K 7 svn:log V 286 MFC 308164 hyperv/hn: Regroup if_start related functions. And put them under HN_IFSTART_SUPPORT, which is by default on until we whack the if_start related bits from base system. Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D8392 END