Report initiator id in portlist XML in more formalized way.

MFC after:	3 days


git-svn-id: svn+ssh://svn.freebsd.org/base/head@275959 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Increase allowed size of the microcode blob to 32KB.  Some Intel CPU's
updates weight 28KB.

PR:	179523
MFC after:	1 week


git-svn-id: svn+ssh://svn.freebsd.org/base/head@275960 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f