Forced commit to denote that the commit message of r231623 actually

Forced commit to denote that the commit message of r231623 actually
should have read:
MFC: r231518

Flesh out support for SAS1078 and SAS1078DE (which are said to actually
be the same chip):
- The I/O port resource may not be available with these. However, given
  that we actually only need this resource for some controllers that
  require their firmware to be up- and downloaded (which excludes the
  SAS1078{,DE}) just handle failure to allocate this resource gracefully
  when possible. While at it, generally put non-fatal resource allocation
  failures under bootverbose.
- SAS1078{,DE} use a different hard reset protocol.
- Add workarounds for the 36GB physical address limitation of scatter/
  gather elements of these controllers.

Tested by:	Slawa Olhovchenkov

PR:	149220 (remaining part)

git-svn-id: svn://svn.freebsd.org/base/stable/9@231626 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f