[wasm] Skip additional wasm tests on big-endian platforms.

test/cctest/cctest.status

 # Copyright 2011 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 327 matching lines @@
   'test-run-wasm-module/Run_WasmModule_Return114': [SKIP],
   'test-run-wasm-module/Run_WasmModule_CheckMemoryIsZero': [SKIP],
   'test-run-wasm-module/Run_WasmModule_Global': [SKIP],
   'test-run-wasm/Run_Wasm_Int32LoadInt16_signext': [SKIP],
   'test-run-wasm/Run_Wasm_Int32LoadInt16_zeroext': [SKIP],
   'test-run-wasm/Run_WasmMixedGlobals': [SKIP],
   'test-run-wasm-64/Run_WasmI64*': [SKIP],
   'test-run-wasm-64/Run_Wasm_I64*': [SKIP],
   'test-run-wasm-64/Run_Wasm_LoadStoreI64_sx': [SKIP],
   'test-run-wasm-64/Run_TestI64WasmRunner': [SKIP],
+  'test-run-wasm-64/Run_WasmCall_Int64Sub': [SKIP],
+  'test-run-wasm-64/Run_Wasm_MemI64_Sum': [SKIP],
 }],  # 'byteorder == big'
 
 ##############################################################################
 ['arch == arm', {
 
   'test-cpu-profiler/CollectDeoptEvents': [PASS, FAIL],
 
   # BUG(355): Test crashes on ARM.
   'test-log/ProfLazyMode': [SKIP],
 
@@ skipping 275 matching lines @@
   'test-run-inlining/InlineSurplusArguments': [FAIL],
   'test-run-inlining/InlineBuiltin': [FAIL],
   'test-run-inlining/InlineTwiceDependent': [FAIL],
   'test-run-inlining/SimpleInliningContextDeopt': [FAIL],
 
   # BUG(4751). Flaky with ignition and tsan.
   'test-cpu-profiler/JsNativeJsSample': [PASS, ['tsan', SKIP]],
 }],  # ignition or ignition_turbofan
 
 ]