ci: Rebalance radv/grunt testing

We've recently rebalanced our lab devices to get a fewer number of
grunts. Switch to scheduling only on the newer shinier ones, running
fewer tests. We'll evaluate the runtime, and if they're quick enough
then we can increase the amount of testing we do.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20081>
(cherry picked from commit 921cfcf4c4)

.pick_status.json

@@ -5890,7 +5890,7 @@
         "description": "ci: Rebalance radv/grunt testing",
         "nominated": false,
         "nomination_type": null,
-        "resolution": 4,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": null
     },

src/amd/ci/gitlab-ci.yml

@@ -17,7 +17,7 @@
   variables:
     GPU_VERSION: radeonsi-stoney
     DRIVER_NAME: radeonsi
-    # 12 devices (2022-10-12)
+    # 12 devices (2022-11-30)
     RUNNER_TAG: mesa-ci-x86-64-lava-acer-R721T-grunt
     DEVICE_TYPE: acer-R721T-grunt
 
@@ -30,18 +30,18 @@
     DRIVER_NAME: radv
     GPU_VERSION: radv-stoney-aco
     VK_DRIVER: radeon
-    # 10 devices (2022-10-12)
-    DEVICE_TYPE: hp-11A-G6-EE-grunt
-    RUNNER_TAG: mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
+    # 6 devices (2022-11-30)
+    DEVICE_TYPE: hp-14-db0003na-grunt
+    RUNNER_TAG: mesa-ci-x86-64-lava-hp-14-db0003na-grunt
 
 # Run ten jobs in parallel each running 1/40th of the test suite
 radv-stoney-vkcts:amd64:
   extends:
     - .lava-test:amd64
     - .radv-stoney-test:amd64
-  parallel: 10
+  parallel: 5
   variables:
-    DEQP_FRACTION: 4
+    DEQP_FRACTION: 8
 
 radeonsi-stoney-gl:amd64:
   extends: