Merge commit '5e3bc7144edd6e4fa2824944e5eb16c28197dd5a' into upstream-merge

Merge commit '5e3bc7144edd6e4fa2824944e5eb16c28197dd5a' into upstream-merge

* commit '5e3bc7144edd6e4fa2824944e5eb16c28197dd5a': (47 commits)
  virtio-scsi: enable MSI-X support
  virtio-scsi: add ioeventfd support
  virtio-scsi: report parameter change events
  virtio-scsi: do not report dropped events after reset
  virtio-scsi: Report missed events
  virtio-scsi: Implement hotplug support for virtio-scsi
  scsi: report parameter changes to HBA drivers
  scsi-disk: report resized disk via sense codes
  scsi: establish precedence levels for unit attention
  scsi: introduce hotplug() and hot_unplug() interfaces for SCSI bus
  scsi: add tracepoint for scsi_req_cancel
  scsi-disk: removable hard disks support load/eject
  scsi-disk: Fail medium writes with proper sense for readonly LUNs
  scsi-disk: improve the lba-out-of-range tests for read/write/verify
  scsi-disk: rd/wr/vr-protect !=0 is an error
  scsi-disk: support toggling the write cache
  scsi-disk: parse MODE SELECT commands and parameters
  scsi-disk: fix changeable values for MODE_PAGE_R_W_ERROR
  scsi-disk: adjust offsets in MODE SENSE by 2
  scsi-disk: support emulated TO_DEV requests
  ...

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>