MFC: r274487

Lock iir(4) and mark it MPSAFE.

Sponsored by:	Multiplay
MFC r272735:
Support upto 256VD.

MFC r272737:
Support 32-bit linux binaries on FreeBSD 64bit.

MFC r272738:
Fix the minor svn add issue.

MFC r272739:
Extended MSI-x vectors support for Invader and Fury(12Gb/s HBA).

MFC r272740:
Add d_poll support.

MFC r272741:
Fix leak of mfi cmd in the passthru and correctly limit oustanding.

MFC r272742:
Import vendor Phase 6.5 driver

MFC r272744:
Style (9) fixes.

MFC r273040:
Fix for build issue on i386.xen and amd64.xen.

Sponsored by:	Multiplay
MFC r272000:
Switch from timeout(9) to callout(9)

Sponsored by:	Multiplay
MFC r266772:
Various cleanups and fixes including switching from timeout to callout

Sponsored by:	Multiplay
MFC r267290:
Make the hpt27xx(4) driver MPSAFE

Sponsored by:	Multiplay
MFC r269613:
Various fixes to hptnr(4)

Sponsored by:	Multiplay
MFC r269615:
Various fixes to hptrr(4)

Sponsored by:	Multiplay
MFC r274819:
Prevent overflow issues in timeout processing

MFC r274852:
Fix build with asr driver

Sponsored by:	Multiplay