PPC/s390: Ignore regress/wasm/regress-808848

R=clemensh@chromium.org

Bug: v8:7539

Change-Id: I1bd02ba84803055dd9e8b808c17622aa4fca42d4
Reviewed-on: https://chromium-review.googlesource.com/984520Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#52288}

test/mjsunit/mjsunit.status

@@ -736,6 +736,7 @@
   # TODO(ppc/s390): fix constant pool issue and implement tagging for reloc
   'wasm/compiled-module-serialization': [SKIP],
   'regress/wasm/regress-808980': [SKIP],
+  'regress/wasm/regress-808848': [SKIP],
 }],  # 'arch == ppc64 or arch == ppc or arch == s390 or arch == s390x'
 
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