Merge tag 'pull-9.2-rc-updates-181124-1' of https://gitlab.com/stsquad/qemu into staging

Misc fixes for 9.2

  - fix remaining gdbstub test cases to exit cleanly
  - update MAINTAINERS with qemu-rust mailing list details
  - re-factor virtio-gpu and fix coverity warnings

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* tag 'pull-9.2-rc-updates-181124-1' of https://gitlab.com/stsquad/qemu:
  hw/display: check frame buffer can hold blob
  hw/display: factor out the scanout blob to fb conversion
  MAINTAINERS: CC rust/ patches to qemu-rust list
  tests/tcg: Stop using exit() in the gdbstub testcases

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