nvme-pci: ignore the subsysem NQN on Phison E16

Tested both with Corsairs firmware 11.3 and 13.0 for the Corsairs MP600
and both have the issue as reported by the kernel.

nvme nvme0: missing or invalid SUBNQN field.

Signed-off-by: Claus Stovgaard <claus.stovgaard@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>