[mlir] Fix legal/illegal ops in TosaToTensor & TosaToLinalg

[mamrami]

Summary

tosa.reshape and tosa.concat were moved from TosaToLinalg to TosaToTensor
(D145119 & D145952). So now they are legal after applying TosaToLinalg patterns,
and illegal after applying TosaToTensor patterns.

This includes D146174 (thanks @ramiro050!)

[krzysz00]

LGTM

[mamrami]

Update commit message

[mamrami]

commit message

mlir/lib/Conversion/TosaToLinalg/TosaToLinalgPass.cpp

target.addLegalDialect<linalg::LinalgDialect, tensor::TensorDialect,
                            scf::SCFDialect>();
     target.addIllegalDialect<tosa::TosaDialect>();
 
     // Not every TOSA op can be legalized to linalg.
     target.addLegalOp<tosa::ApplyScaleOp>();
     target.addLegalOp<tosa::IfOp>();
     target.addLegalOp<tosa::ConstOp>();
     target.addLegalOp<tosa::WhileOp>();
+    target.addLegalOp<tosa::ConcatOp>();
     target.addLegalOp<tosa::SliceOp>();
     target.addLegalOp<tosa::ReshapeOp>();
     target.addLegalOp<tosa::PadOp>();
 
     target.markUnknownOpDynamicallyLegal([](Operation *) { return true; });
 
     FunctionOpInterface func = getOperation();
     mlir::tosa::populateTosaToLinalgConversionPatterns(&patterns);

mlir/lib/Conversion/TosaToTensor/TosaToTensorPass.cpp

 using namespace tosa;
 
 namespace {
 struct TosaToTensor : public impl::TosaToTensorBase<TosaToTensor> {
 public:
   void runOnOperation() override {
     RewritePatternSet patterns(&getContext());
     ConversionTarget target(getContext());
+    target.addIllegalOp<tosa::ConcatOp>();
+    target.addIllegalOp<tosa::ReshapeOp>();
     target.addIllegalOp<tosa::SliceOp>();
     target.addIllegalOp<tosa::PadOp>();
     target.addLegalDialect<arith::ArithDialect>();
     target.addLegalDialect<tensor::TensorDialect>();
 
     mlir::tosa::populateTosaToTensorConversionPatterns(&patterns);
 
     if (failed(applyPartialConversion(getOperation(), target,