Pull NVMe fixes from Keith for 4.16-rc.

* 'for-jens' of git://git.infradead.org/nvme:
  nvmet: fix PSDT field check in command format
  nvme-multipath: fix sysfs dangerously created links
  nvme-pci: Fix nvme queue cleanup if IRQ setup fails
  nvmet-loop: use blk_rq_payload_bytes for sgl selection
  nvme-rdma: use blk_rq_payload_bytes instead of blk_rq_bytes
  nvme-fabrics: don't check for non-NULL module in nvmf_register_transport