Merge remote-tracking branch 'remotes/kraxel/tags/vga-20170913-pull-request' into...

Merge remote-tracking branch 'remotes/kraxel/tags/vga-20170913-pull-request' into staging

vga: bugfixes.
qxl: chunked cursor support.

# gpg: Signature made Wed 13 Sep 2017 08:41:08 BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/vga-20170913-pull-request:
  virtio-gpu: don't clear QemuUIInfo information on reset
  vga/migration: Update memory map in post_load
  qxl: add support for chunked cursors.
  qxl: drop mono cursor support
  vga: stop passing pointers to vga_draw_line* functions
  vga: fix display update region calculation (split screen)

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