This patch will add task management support in driver. Below is high level description:

This patch will add task management support in driver. Below is high level description:
If a SCSI IO times out, then before initiating OCR, now the driver will try to send a
target reset to the particular target for which the IO is timed out. If that also fails,
then the driver will initiate OCR.

Submitted by:   Sumit Saxena <sumit.saxena@broadcom.com>
Reviewed by:    Kashyap Desai <Kashyap.Desai@broadcom.com>
MFC after:  3 days
Sponsored by:   Broadcom Limited/AVAGO Technologies