K 10
svn:author
V 5
sephe
K 8
svn:date
V 27
2016-09-08T05:27:43.297781Z
K 7
svn:log
V 203
hyperv/hn: Pull vmbus channel open up.

While I'm here, pull up the channel callback related code too.

MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7805

END