s390x: ignore luci-go on the arch because it's missing

Bug: v8:8420

Change-Id: Ie3ca4cbee01a1b19c82630ec205915ff6a00b303
Reviewed-on: https://chromium-review.googlesource.com/c/1320449Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#57297}

DEPS

@@ -89,6 +89,7 @@ deps = {
           'version': 'git_revision:bc125484b8513898f17bc2501ac5e95330f44a3b',
         },
       ],
+      'condition': 'host_cpu != "s390"',
       'dep_type': 'cipd',
   },
   'v8/test/wasm-js/data':