[mips][be] Skip test which fails with segfault

TBR=sigurds@chromium.org

No-Try: true
Bug: v8:7953
Change-Id: I188c5b0501c2f0cbf8dacdec21f3e86ebec88cd7
Reviewed-on: https://chromium-review.googlesource.com/1142404Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54528}

test/mjsunit/mjsunit.status

@@ -319,6 +319,9 @@
   'asm/sqlite3/*': [SKIP],
   # TODO(mips-team): Fix Wasm for big-endian.
   'wasm/*': [SKIP],
+  # TODO(mips-team): Fix SEGV on regress-864509.js on big endian
+  # (https://crbug.com/v8/7953).
+  'regress/wasm/regress-864509': [SKIP],
 }],  # 'byteorder == big'
 
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