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There are certain management commands which require firmware intervention.
These commands are termed MPT commands. Add support for them.

Link: https://lore.kernel.org/r/20220429211641.642010-5-sumit.saxena@broadcom.com

Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>