Use ./config/scripts to toggle config

Let's enable CMA for Mali and ensure that Panfrost is always built

.gitlab-ci.yml

@@ -29,9 +29,9 @@ build:
     - export PATH="/usr/lib/ccache:$PATH"
     - ccache -s
     - make defconfig
-    - echo "CONFIG_DRM_GEM_SHMEM_HELPER=y" >> .config
-    - echo "CONFIG_DRM_SCHED=m" >> .config
-    - echo "CONFIG_DRM_PANFROST=m" >> .config
+    - ./scripts/config -e CONFIG_CMA
+    - ./scripts/config -e CONFIG_DMA_CMA
+    - ./scripts/config -e CONFIG_DRM_PANFROST
     - make -j$(nproc) bindeb-pkg
     - mkdir artifacts && dcmd mv ../*.changes artifacts/
   artifacts: