At adapter attachment or SLI port initialization, read the SLIPORT_STATUS
register to check for pldv_enable. If found, the driver will perform a PCIe
configuration space write when attaching to an SLI port instance that is an
LPe32000 series adapter.

Link: https://lore.kernel.org/r/20210927183518.22130-1-jsmart2021@gmail.comCo-developed-by: NNigel Kirkland <nkirkland2304@gmail.com>
Signed-off-by: NNigel Kirkland <nkirkland2304@gmail.com>
Signed-off-by: NJames Smart <jsmart2021@gmail.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>