scsi: lpfc: Convert debugfs directory counts from atomic to unsigned int

Atomicity is not necessary for debugfs directory accounting because
vport deletion and creation is already serialized.  Creation has always
been serialized through sysfs.  Deletion is serialized via walking the
lpfc_create_vport_work_array and calling fc_vport_terminate one-by-one
for each NPIV port.

Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Closes: https://lore.kernel.org/linux-fsdevel/20250702212917.GK3406663@ZenIV/


Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Message-ID: <20250915180811.137530-13-justintee8345@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>