gitlab: Add a StarFive VisionFive2 to the sjg lab

I have one of these boards loaded with Ubuntu 24.10 (64-bit). Add an
entry for it so that it can be used for testing.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-By: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a434094..74dc05d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -671,3 +671,9 @@
   variables:
     ROLE: rpi
   <<: *lab_dfn
+
+# StarFive VisionFive 2
+vf2:
+  variables:
+    ROLE: vf2
+  <<: *lab_dfn