zink/ci: Rename a618 suite and expectation files

Match the other zink files, including zink-tu-a630 and zink-tu-a750.

Signed-off-by: Valentine Burley <valentine.burley@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33466>

src/gallium/drivers/zink/ci/gitlab-ci.yml

@@ -118,10 +118,10 @@ zink-tu-a618:
     - .lava-sc7180-trogdor-lazor-limozeen:arm64
   variables:
     DEQP_FRACTION: 2
-    DEQP_SUITE: zink-freedreno-a618
+    DEQP_SUITE: zink-tu-a618
     FLAKES_CHANNEL: "#freedreno-ci"
     HWCI_START_WESTON: 1
-    GPU_VERSION: zink-freedreno-a618
+    GPU_VERSION: zink-tu-a618
   parallel: 2
 
 zink-tu-a618-full: