Added support for Avago/Broadcom Cutlass(12 Gbps- 16 port count) controllers.
Submitted by: Sumit Saxena <Sumit.Saxena@broadcom.com>
Reviewed by: Kashyap Desai <Kashyap.Desai@broadcom.com>
MFC after: 3 days
Sponsored by: AVAGO/BROADCOM Limited