[SCSI] mvsas: add support for Marvell 88SE9445/88SE9485

This is support for Marvell 88SE9445/88SE9485 SAS/SATA HBA, which
is based on Marvell 88SE9480.

Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>