ci: avoid triggering vc4 & v3d tests on v3dv-only MRs

There are a lot of vulkan-only MRs, so we can save a lot of CI resources
by not running GL tests as well.

Signed-off-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: David Heidelberg <david.heidelberg@collabora.com>
Reviewed-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19680>

.gitlab-ci/test-source-dep.yml

@@ -304,13 +304,27 @@
       - src/panfrost/bifrost/**/*
       when: on_success
 
+.broadcom-common-rules:
+  rules:
+    - changes:
+      - src/broadcom/meson.build
+      - src/broadcom/ci/**/*
+      - src/broadcom/cle/**/*
+      - src/broadcom/clif/**/*
+      - src/broadcom/common/**/*
+      - src/broadcom/compiler/**/*
+      - src/broadcom/drm-shim/**/*
+      - src/broadcom/qpu/**/*
+      - src/broadcom/simulator/**/*
+      when: on_success
+
 .vc4-rules:
   stage: broadcom
   rules:
     - !reference [.igalia-farm-rules, rules]
     - !reference [.gl-rules, rules]
+    - !reference [.broadcom-common-rules, rules]
     - changes:
-      - src/broadcom/**/*
       - src/gallium/drivers/vc4/**/*
       - src/gallium/winsys/kmsro/**/*
       - src/gallium/winsys/vc4/**/*
@@ -321,8 +335,8 @@
   rules:
     - !reference [.igalia-farm-rules, rules]
     - !reference [.gl-rules, rules]
+    - !reference [.broadcom-common-rules, rules]
     - changes:
-      - src/broadcom/**/*
       - src/gallium/drivers/v3d/**/*
       - src/gallium/winsys/kmsro/**/*
       - src/gallium/winsys/v3d/**/*