MIPS: skip webkit/dfg-int-overflow-in-loop on big-endian.

test/webkit/webkit.status

Index: test/webkit/webkit.status
diff --git a/test/webkit/webkit.status b/test/webkit/webkit.status
index be322c17dde2a4eb6515215160ff9131b707084f..1c0f40ffff6a0fdc11e4ec3597360bfc8ba8d4a8 100644
--- a/test/webkit/webkit.status
+++ b/test/webkit/webkit.status
@@ -62,6 +62,10 @@
   # Doesn't work with gcc 4.6 on arm or arm64 for some reason.
   'reentrant-caching': [SKIP],
 }],  # 'dcheck_always_on == True and (arch == arm or arch == arm64)'
+['arch == mips', {
+  # Too slow for mips big-endian boards on bots (no FPU).
+  'dfg-int-overflow-in-loop': [SKIP],
+}], # 'arch == mips'
 
 ##############################################################################
 ['asan == True', {