scsi: lpfc: Discovery state machine fixes for LOGO handling

If a LOGO is received for a node that is in the NPR state, post a DEVICE_RM
event to allow clean up of the logged out node.

Clearing the NLP_NPR_2B_DISC flag upon receipt of a LOGO ACC may cause
skipping of processing outstanding PLOGIs triggered by parallel RSCN
events.  If an outstanding PLOGI is being retried and receipt of a LOGO ACC
occurs, then allow the discovery state machine's PLOGI completion to clean
up the node.

Link: https://lore.kernel.org/r/20210707184351.67872-6-jsmart2021@gmail.com


Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>