Switch CQ from IntelIris540 to 640 for Ubuntu bot.

Change-Id: I587be7c5e5da175e1f5f165511cbd14308cb9a95
Reviewed-on: https://skia-review.googlesource.com/87721
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
diff --git a/infra/branch-config/cq.cfg b/infra/branch-config/cq.cfg
index e374b29..43ef8b1 100644
--- a/infra/branch-config/cq.cfg
+++ b/infra/branch-config/cq.cfg
@@ -56,7 +56,7 @@
       builders { name: "Test-Win2016-Clang-GCE-CPU-AVX2-x86_64-Release-All" }
       builders { name: "Test-iOS-Clang-iPhone7-GPU-GT7600-arm64-Debug-All" }
       builders {
-        name: "Test-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-All"
+        name: "Test-Ubuntu16-Clang-NUC7i5BNK-GPU-IntelIris640-x86_64-Debug-All"
         experiment_percentage: 100
       }
       builders {