Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging

Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging

# gpg: Signature made Wed 02 Sep 2015 17:14:40 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/net-pull-request:
  ne2000: Drop ne2000_can_receive
  vmxnet3: Drop net_vmxnet3_info.can_receive
  rtl8139: Do not consume the packet during overflow in standard mode.
  rtl8139: Fix receive buffer overflow check
  rtl8139: use ldl/stl wrapper for unaligned 32-bit access
  rtl8139: use net/eth.h macros instead of custom macros
  rtl8139: remove duplicate net/eth.h definitions

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