ci: pin virglrenderer version

Currently we always just pull in whatever version of
virglrenderer happens to be TOT in googlesource.

Instead, pin a specific version, and this should also
trigger an update of the container when this versions
is changed.

v2: Fix spelling error (tomeu)

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12542>

.gitlab-ci/container/build-crosvm.sh

@@ -8,6 +8,11 @@ pushd /platform/crosvm
 git checkout "$CROSVM_VERSION"
 git submodule update --init
 
+VIRGLRENDERER_VERSION=2a5fb800c6b0ce15ad37c2c698635e3e2d27b37c
+pushd third_party/virglrenderer
+git checkout "$VIRGLRENDERER_VERSION"
+popd
+
 RUSTFLAGS='-L native=/usr/local/lib' cargo install \
   bindgen \
   -j ${FDO_CI_CONCURRENT:-4} \