MFC r308425: Add support for EIIOE flag in Additional Element Status.

It was added in SES-3 spec, and its support required to properly link
the Additional Element Status page data to the original elements.

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Fix off by one error in ses_enc_desc_last_byte().

MFprojects/zfsd:
Revamp the CAM enclosure services driver.
This updated driver uses an in-kernel daemon to track state changes and
publishes physical path location information\for disk elements into the
CAM device database.

Sponsored by: Spectra Logic Corporation
Sponsored by: iXsystems, Inc.
Submitted by: gibbs, will, mav

Change new constant names to ones used by OpenSolaris.

Add names for few more SES element types according SES-2 specification.

Fix ioctl to not get swallowed by ioctl code (i.e., make sure the darned
code sticks within 8 bits)

MFC after: 1 week

Start each of the license/copyright comments with /*-

Move the kernel specific stuff into scsi_ses.c. Redo the ioctls
to be more platform independent. Add a ses_hlptxt structure definition
and retrieval ioctl for when we are able to retrieve object help text

SES Objects can have up to 64 KBytes of associated 'help' text- the
Sun A5000 uses this, for example, to give physical location information
(e.g., 'left power supply').

add functional but stub SES/SAF-TE driver