[mlir][tosa] Enable tosa.div for TosaMakeBroadcastable

[rsuderman]

Summary

TosaMakeBroadcastable needs to include tosa.div, which was added later in the
specification.

mlir/lib/Dialect/Tosa/Transforms/TosaMakeBroadcastable.cpp

public:
   void runOnFunction() override {
     auto func = getFunction();
     RewritePatternSet patterns(func.getContext());
     MLIRContext *ctx = func.getContext();
     // Add the generated patterns to the list.
     patterns.add<ConvertTosaOp<tosa::AddOp>>(ctx);
     patterns.add<ConvertTosaOp<tosa::SubOp>>(ctx);
     patterns.add<ConvertTosaOp<tosa::MulOp>>(ctx);
+    patterns.add<ConvertTosaOp<tosa::DivOp>>(ctx);
     patterns.add<ConvertTosaOp<tosa::MaximumOp>>(ctx);
     patterns.add<ConvertTosaOp<tosa::MinimumOp>>(ctx);
     patterns.add<ConvertTosaOp<tosa::EqualOp>>(ctx);
     patterns.add<ConvertTosaOp<tosa::GreaterOp>>(ctx);
     patterns.add<ConvertTosaOp<tosa::GreaterEqualOp>>(ctx);
     patterns.add<ConvertTosaOp<tosa::LogicalLeftShiftOp>>(ctx);
     patterns.add<ConvertTosaOp<tosa::ArithmeticRightShiftOp>>(ctx);
     patterns.add<ConvertTosaOp<tosa::LogicalRightShiftOp>>(ctx);
     (void)applyPatternsAndFoldGreedily(func, std::move(patterns));
   }
 };
 } // end anonymous namespace
 
 std::unique_ptr<Pass> mlir::tosa::createTosaMakeBroadcastablePass() {
   return std::make_unique<TosaMakeBroadcastable>();
 }