Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20180605.0' into...

Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20180605.0' into staging

VFIO updates 2018-06-05

 - Removed unused DPRINTF (Tiwei Bie)
 - KVM & VFIO ioeventfd support for NVIDIA MSI ACK (Alex Williamson)
 - Default vfio-pci display support to "off" (Alex Williamson)

# gpg: Signature made Tue 05 Jun 2018 20:51:14 BST
# gpg:                using RSA key 239B9B6E3BB08B22
# gpg: Good signature from "Alex Williamson <[email protected]>"
# gpg:                 aka "Alex Williamson <[email protected]>"
# gpg:                 aka "Alex Williamson <[email protected]>"
# gpg:                 aka "Alex Williamson <[email protected]>"
# Primary key fingerprint: 42F6 C04E 540B D1A9 9E7B  8A90 239B 9B6E 3BB0 8B22

* remotes/awilliam/tags/vfio-update-20180605.0:
  vfio/pci: Default display option to "off"
  vfio/quirks: Enable ioeventfd quirks to be handled by vfio directly
  vfio/quirks: ioeventfd quirk acceleration
  vfio/quirks: Add quirk reset callback
  vfio/quirks: Add common quirk alloc helper
  vfio: remove DPRINTF() definition from vfio-common.h

Signed-off-by: Peter Maydell <[email protected]>