qla2xxx: Serialize GPNID for multiple RSCN

qla2xxx: Serialize GPNID for multiple RSCN

Orabug: 27235104

GPNID is triggered by RSCN. For multiple RSCNs of the same
affected NPORT ID, serialize the GPNID to prevent confusion.

Fixes: 726b85487067d ("qla2xxx: Add framework for async fabric discovery")
Cc: <stable@vger.kernel.org> # 4.10+
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
[ Upstream commit 2d73ac6102d943c4be4945735a338005359c6abc ]
Signed-off-by: Somasundaram Krishnasamy <somasundaram.krishnasamy@oracle.com>
Reviewed-by: Jack Vogel <jack.vogel@oracle.com>