Merge remote-tracking branch 'bonzini/scsi-next' into staging

# By Peter Lieven (3) and others
# Via Paolo Bonzini
* bonzini/scsi-next:
  scsi: Drop useless null test in scsi_unit_attention()
  lsi: use qbus_reset_all to reset SCSI bus
  scsi: fix segfault with 0-byte disk
  iscsi: add support for iSCSI NOPs [v2]
  iscsi: partly avoid iovec linearization in iscsi_aio_writev
  iscsi: add iscsi_create support

diff --cc block/iscsi.c
Simple merge

diff --cc hw/scsi-disk.c
Simple merge