MFC r281387:

Merge changes from vendor driver version 1.1.1:

v1.1.1 2015-03-26

• Support 4Kn drive.
• Change the SCSI target ID of the disk to be the index of physical connetion to the HBA.
• Support staggered drive spin up.
• Fix a bug that command would be timeout because of improper interrupt service routine.
• Error handling to avoid scsi command lost which caused system hang up.
• Fix a bug that fail to get the devcie's serial number via FreeNAS WebGUI.

Many thanks to HighPoint for continued support of FreeBSD!

Relnotes: yes