scsi: mvsas: fix wrong endianness of sgpio api

This patch fixes the byte order of the SGPIO api and brings it back in
sync with ledmon v0.80 and above.

[mkp: added missing SoB and fixed whitespace]

Signed-off-by: Wilfried Weissmann <wilfried.weissmann@gmx.at>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>