ci/build-deqp: print more detailed information about what deqp version is running

`git describe` tells you that you have N patches on top of tag T, but
not what these patches are, and the commit hash is useless as it is only
valid during the container build.

Replace this with:
- the tag that we are checking out
- the list of patches applied on top of it

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26013>

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

@@ -23,6 +23,8 @@ pushd /VK-GL-CTS
 
 mkdir -p /deqp
 
+echo "dEQP base version $DEQP_VERSION" > /deqp/version-log
+
 # Patches to VulkanCTS may come from commits in their repo (listed in
 # cts_commits_to_backport) or patch files stored in our repo (in the patch
 # directory `$OLDPWD/.gitlab-ci/container/patches/` listed in cts_patch_files).
@@ -52,6 +54,9 @@ do
   git am < $OLDPWD/.gitlab-ci/container/patches/$patch
 done
 
+echo "The following local patches are applied on top:" >> /deqp/version-log
+git log --reverse --oneline $DEQP_VERSION.. --format=%s | sed 's/^/- /' >> /deqp/version-log
+
 # --insecure is due to SSL cert failures hitting sourceforge for zlib and
 # libpng (sigh).  The archives get their checksums checked anyway, and git
 # always goes through ssh or https.
@@ -91,8 +96,6 @@ if [ "${DEQP_TARGET}" = 'android' ]; then
     mv /deqp/modules/egl/deqp-egl /deqp/modules/egl/deqp-egl-android
 fi
 
-git -C /VK-GL-CTS describe --long > /deqp/version
-
 # Copy out the mustpass lists we want.
 mkdir /deqp/mustpass
 for mustpass in $(< /VK-GL-CTS/external/vulkancts/mustpass/main/vk-default.txt) ; do

.gitlab-ci/deqp-runner.sh

@@ -166,7 +166,7 @@ fi
 
 uncollapsed_section_switch deqp "deqp: deqp-runner"
 
-echo "deqp $(cat /deqp/version)"
+cat /deqp/version-log
 
 set +e
 if [ -z "$DEQP_SUITE" ]; then