gitlab-ci: Check building KVM-only aarch64 target

Add a manual new job to cross-build the aarch64 target with
only the KVM accelerator enabled (in particular, no TCG).

Re-enable running the similar job on the project Aarch64
custom runner.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230426180013.14814-14-farosas@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

.gitlab-ci.d/crossbuilds.yml

@@ -196,3 +196,14 @@ cross-arm64-xen-only:
     IMAGE: debian-arm64-cross
     ACCEL: xen
     EXTRA_CONFIGURE_OPTS: --disable-tcg --disable-kvm
+
+# Similar job is run by qemu-project's custom runner by default
+cross-arm64-kvm-only:
+  extends: .cross_accel_build_job
+  needs:
+    job: arm64-debian-cross-container
+  variables:
+    QEMU_JOB_OPTIONAL: 1
+    IMAGE: debian-arm64-cross
+    ACCEL: kvm
+    EXTRA_CONFIGURE_OPTS: --disable-tcg --disable-xen --without-default-devices

.gitlab-ci.d/custom-runners/ubuntu-22.04-aarch64.yml

@@ -115,11 +115,7 @@ ubuntu-22.04-aarch64-notcg:
  - aarch64
  rules:
  - if: '$CI_PROJECT_NAMESPACE == "qemu-project" && $CI_COMMIT_BRANCH =~ /^staging/'
-   when: manual
-   allow_failure: true
  - if: "$AARCH64_RUNNER_AVAILABLE"
-   when: manual
-   allow_failure: true
  script:
  - mkdir build
  - cd build