pan/ci: Extend g610-vk pre-merge test coverage

Things are stable enough now to increase the number tests per group,
which allows us to lower the DEQP_FRACTION to 3. This also allows
us to lower the 'parallel' property to 4 leaving one extra board for
other jobs to run.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Valentine Burley <valentine.burley@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38923>

src/panfrost/ci/deqp-panfrost-g610-vk.toml

@@ -2,3 +2,4 @@
 deqp = "/deqp-vk/external/vulkancts/modules/vulkan/deqp-vk"
 caselists = ["/deqp-vk/mustpass/vk-main.txt"]
 renderer_check = "Mali-G610"
+tests_per_group = 10000

src/panfrost/ci/gitlab-ci.yml

@@ -173,7 +173,7 @@ panfrost-g610-piglit:arm64:
     LAVA_TAGS: 4gb
 
 panfrost-g610-vk:arm64:
-  parallel: 5
+  parallel: 4
   extends:
     - .lava-arm64-test-vk
     - .panfrost-test
@@ -181,12 +181,10 @@ panfrost-g610-vk:arm64:
     - .panfrost-vk-rules
   variables:
     DRIVER_NAME: panvk
-    # Using more than 4 cores cause instabilities
-    FDO_CI_CONCURRENT: 4
     MESA_VK_IGNORE_CONFORMANCE_WARNING: 1
     PANVK_DEBUG: "no_known_warn,sync,cs,coherent_before_cached"
     DEQP_SUITE: panfrost-g610-vk
-    DEQP_FRACTION: 5
+    DEQP_FRACTION: 3
     HWCI_START_WESTON: 1
     LAVA_TAGS: at-least-8gb