llvmpipe/ci: set DRIVER_NAME to not have to manually add llvmpipe-skips.txt in asan job variant

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36354>

src/gallium/drivers/llvmpipe/ci/deqp-llvmpipe-asan.toml

@@ -2,7 +2,6 @@
 [[deqp]]
 deqp = "/deqp-gles/modules/gles31/deqp-gles31"
 caselists = ["/deqp-gles/mustpass/gles31-main.txt"]
-skips = ["install/llvmpipe-skips.txt"]
 deqp_args = [
     "--deqp-surface-width=256", "--deqp-surface-height=256",
     "--deqp-surface-type=pbuffer", "--deqp-gl-config-name=rgba8888d24s8ms0", "--deqp-visibility=hidden"

src/gallium/drivers/llvmpipe/ci/gitlab-ci-inc.yml

@@ -76,6 +76,7 @@
     LIBGL_ALWAYS_SOFTWARE: "true"
     GALLIUM_DRIVER: "llvmpipe"
     FLAKES_CHANNEL: "#mesa-swrast-ci"
+    DRIVER_NAME: llvmpipe
     GPU_VERSION: llvmpipe
 
 .llvmpipe-piglit-cl: