gitlab-ci: Move artifact preparation to separate script

It's currently only needed for the meson-main and meson-arm64 jobs, not
the other meson build jobs.

Also remove MESON_SHADERDB, just run .gitlab-ci/run-shader-db.sh
directly from the meson-main job.

v2:
* Also run prepare-artifacts.sh in meson-arm64 script
v3:
* Move tarball creation into the new script as well, as it prevented
  ccache --show-stats from running in after_script

Reviewed-by: Eric Engestrom <eric.engestrom@intel.com> # v1
Reviewed-by: Eric Anholt <eric@anholt.net>

.gitlab-ci/prepare-artifacts.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+set -e
+set -o xtrace
+
+# Delete 2MB of includes from artifacts.
+rm -rf install/include
+
+# Strip the drivers in the artifacts to cut 80% of the artifacts size.
+if [ -n "$CROSS" ]; then
+    STRIP=`sed -n -E "s/strip\s*=\s*'(.*)'/\1/p" "$CROSS_FILE"`
+    if [ -z "$STRIP" ]; then
+        echo "Failed to find strip command in cross file"
+        exit 1
+    fi
+else
+    STRIP="strip"
+fi
+find install -name \*.so -exec $STRIP {} \;
+
+# Test runs don't pull down the git tree, so put the dEQP helper
+# script and associated bits there.
+mkdir -p artifacts/
+cp -Rp .gitlab-ci/deqp* artifacts/
+# cp -Rp src/freedreno/ci/expected* artifacts/
+
+# Tar up the install dir so that symlinks and hardlinks aren't each
+# packed separately in the zip file.
+tar -cf artifacts/install.tar install