Add two new functions to the AGP driver KPI to bind/unbind arbitrary sets
of pages into the GTT.

Reviewed by:	kib
MFC after:	1 month


git-svn-id: svn+ssh://svn.freebsd.org/base/head@273856 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Move ifq drain into in6m_purge().

Suggested by:	bms
MFC after:	1 week
Sponsored by:	Yandex LLC


git-svn-id: svn+ssh://svn.freebsd.org/base/head@273857 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f