Disable more wasm tests.

Disabling a failing PPC wasm test.

BUG=
R=bbudge@chromium.org

Review URL: https://codereview.chromium.org/1561823002

Cr-Commit-Position: refs/heads/master@{#33132}

test/cctest/wasm/test-run-wasm-module.cc

@@ -76,6 +76,9 @@ TEST(Run_WasmModule_Return114) {
 }
 
 
+// TODO(tizer): Figure out why this crashes with PPC.
+#if !defined(V8_TARGET_ARCH_PPC) && !defined(V8_TARGET_ARCH_PPC64)
+
 TEST(Run_WasmModule_CallAdd) {
   Zone zone;
   WasmModuleBuilder* builder = new (&zone) WasmModuleBuilder(&zone);
@@ -97,6 +100,8 @@ TEST(Run_WasmModule_CallAdd) {
   TestModule(writer->WriteTo(&zone), 99);
 }
 
+#endif
+
 
 TEST(Run_WasmModule_ReadLoadedDataSegment) {
   static const byte kDataSegmentDest0 = 12;