[SCSI] mpt2sas: MPI2 Rev W (2.00.15) specification

Change set in MPI 2.0 Rev W(2.00.15) specification and 2.00.27 header files

1. Added a bit to the IOCExceptions field of the IOCFacts Reply to indicate
   that the IOC detected a partial memory failure.
2. Added ElapsedSeconds field to RAID Volume Indicator Structure. Added
   Elapsed Seconds Valid flag to Flags field of this structure.
3. Added ElapsedSeconds field to Integrated RAID Operations Status Event Data.
4. In the IOCSettings field of BIOS Page 1, modified the Adapter Support bits
   description to specify X86 BIOS.
5. Toolbox Diagnostic CLI Tool Request may now use chain elements in the SGL.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>