scsi: lpfc: Log when congestion management limits are in effect

When bandwidth reduces from or recovers back to 100% due to congestion
management, log the event.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20221017164323.14536-3-justintee8345@gmail.com


Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>