scsi: lpfc: Add FC-AL support to lpe32000 models

In the past, the lpe32000 models, based their main support being for 32G,
and as FC-AL is not supported in the FC standards past 8G, did not support
FC-AL operation.

This patch adds private-loop FC-AL support for the LPE32000 adapters
when a link is 8G or below. To avoid conditions where link rate may
change, which would cause non-connectivity to the AL device, FC-AL
mode must become a persistent setting and the link kept at a speed
supporting FC-AL.

The patch:

 - Adds a pls attribute indicating whether the adapter properly supports
   FC-AL.

 - Adds support for the adapter to indicate that topology should be fixed
   and the topology types to be configured.

 - Adds a pt attribute to report the persistent topology if present.

Link: https://lore.kernel.org/r/20191018211832.7917-15-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>

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