testing updates:

  - fix minor shell-ism that can break check-tcg
  - turn off verbose logging on custom runners
  - make configure echo call in CI
  - fix unused variable in linux-test
  - add binary compiler docker image for hexagon
  - disable doc and gui builds for tci and disable-tcg builds

# gpg: Signature made Fri 23 Dec 2022 15:18:41 GMT
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* tag 'pull-testing-next-231222-1' of https://gitlab.com/stsquad/qemu

:
  gitlab-ci: Disable docs and GUIs for the build-tci and build-tcg-disabled jobs
  tests/docker: use prebuilt toolchain for debian-hexagon-cross
  tests/tcg: fix unused variable in linux-test
  configure: repeat ourselves for the benefit of CI
  gitlab: turn off verbose logging for make check on custom runners
  configure: Fix check-tcg not executing any tests

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