build,aix: skip ld missing symbols warning
On a typical node CI job we get ~68.5K of these, e.g for https://ci.nodejs.org/job/node-test-commit-aix/23246/nodes=aix61-ppc64/consoleText:
...
ld: 0711-319 WARNING: Exported symbol not defined: v8::internal::BaseBuiltinsFromDSLAssembler::Cast16FixedDoubleArray(v8::internal::compiler::TNode<v8::internal::HeapObject>, v8::internal::compiler::CodeAssemblerLabel*)
ld: 0711-319 WARNING: Exported symbol not defined: v8::internal::BaseBuiltinsFromDSLAssembler::Convert5ATSmi8ATintptr(v8::internal::compiler::TNode<v8::internal::IntPtrT>)
ld: 0711-319 WARNING: Exported symbol not defined: v8::internal::BaseBuiltinsFromDSLAssembler::Convert5ATSmi8ATuint32(v8::internal::compiler::TNode<v8::internal::Uint32T>)
...
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
documentation is changed or added -
commit message follows commit guidelines