scsi: lpfc: Fix missing MDS functionality

Visual code inspection of the MDS implementation revealed two errors in
the driver:

 - The set features Feature Code had an incorrect value

 - The routine that classifies command type for cmd completions was missing
   the Send Frame definition. Send Frame is used for MDS driver loopback.

Link: https://lore.kernel.org/r/20200630215001.70793-3-jsmart2021@gmail.com


Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>