Merge remote-tracking branch 'remotes/marcel/tags/rdma-pull-request' into staging

RDMA queue

* pvrdma: Add support for SRQ

# gpg: Signature made Sat 04 May 2019 14:35:40 BST
# gpg:                using RSA key 36D4C0F0CF2FE46D
# gpg: Good signature from "Marcel Apfelbaum <marcel.apfelbaum@zoho.com>" [marginal]
# gpg:                 aka "Marcel Apfelbaum <marcel@redhat.com>" [marginal]
# gpg:                 aka "Marcel Apfelbaum <marcel.apfelbaum@gmail.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: B1C6 3A57 F92E 08F2 640F  31F5 36D4 C0F0 CF2F E46D

* remotes/marcel/tags/rdma-pull-request:
  hw/pvrdma: Add support for SRQ
  hw/rdma: Modify create/destroy QP to support SRQ
  hw/rdma: Add support for managing SRQ resource
  hw/rdma: Add SRQ support to backend layer

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