gitlab-ci: add the vulkan overlay layer to the vulkan build

Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>

.gitlab-ci/meson-build.sh

@@ -24,7 +24,8 @@ meson _build --native-file=native.file \
       ${GALLIUM_ST} \
       -D gallium-drivers=${GALLIUM_DRIVERS:-[]} \
       -D vulkan-drivers=${VULKAN_DRIVERS:-[]} \
-      -D I-love-half-baked-turnips=true
+      -D I-love-half-baked-turnips=true \
+      ${EXTRA_OPTION}
 cd _build
 meson configure
 ninja -j4