Unsupported operator: com.microsoft.FusedMatMul

[gyulaz-htec]

• MIGraphX commit: 352dcea
• GPU: MI210 (gfx90a)
• ROCm version: 5.7.0

Model(s) to reproduce:

• https://github.com/gyulaz-htec/models/blob/migraphx_testing/text/machine_comprehension/bert-squad/model/bertsquad-12-int8.tar.gz

Fails at: /code/AMDMIGraphX/src/onnx/onnx_parser.cpp:419: parse_graph: Unknown operator: FusedMatMul

Note: More info at ContribOperators.md/com.microsoft.FusedMatMul

[TedThemistokleous]

Will need to scope out effort if we can reuse existing matmul parser for this variant of contrib op that does a MatMul