Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20150210.0' into...

Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20150210.0' into staging

RCU fixes and cleanup (Paolo Bonzini)
Switch to v2 IOMMU interface (Alex Williamson)
DEBUG build fix (Alexey Kardashevskiy)

# gpg: Signature made Tue 10 Feb 2015 17:37:06 GMT using RSA key ID 3BB08B22
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>"
# gpg:                 aka "Alex Williamson <alex@shazbot.org>"
# gpg:                 aka "Alex Williamson <alwillia@redhat.com>"
# gpg:                 aka "Alex Williamson <alex.l.williamson@gmail.com>"

* remotes/awilliam/tags/vfio-update-20150210.0:
  vfio: Fix debug message compile error
  vfio: Use vfio type1 v2 IOMMU interface
  vfio: unmap and free BAR data in instance_finalize
  vfio: free dynamically-allocated data in instance_finalize
  vfio: cleanup vfio_get_device error path, remove vfio_populate_device callback
  memory: unregister AddressSpace MemoryListener within BQL

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>