[arm] [simulator] Disable wasm float tests

The simulator currently does not handle signalling NaNs correctly on
the vabs and vneg instructions.
Temporarily disable the tests until we have a fix.

R=ahaas@chromium.org

Bug: v8:6947
Change-Id: I281cb8213cdcc73c91768a82c44f90f009f7c8eb
Reviewed-on: https://chromium-review.googlesource.com/721663Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48627}

test/wasm-spec-tests/wasm-spec-tests.status

@@ -18,6 +18,13 @@
   'tests/f64_bitwise': [SKIP],
 }],  # 'arch == mipsel or arch == mips64el or arch == mips or arch == mips64'
 
+['arch == arm and simulator_run', {
+  # The simulator might set the quiet NaN bit when executing vabs and vneg, see
+  # http://crbug.com/v8/6947.
+  'tests/float_misc': [SKIP],
+  'tests/float_exprs': [SKIP],
+}],  # 'arch == arm and simulator_run'
+
 ['(arch == mipsel or arch == mips64el or arch == mips or arch == mips64) and not simulator_run', {
   # This test fail because mips does not support the correct NaN bit patterns.
   # But it doesn't fail in simulator.