Results 2 issues of Yi Zhang

This test [CeilFloatModule_basic](https://github.com/llvm/torch-mlir/blob/28be6511d253c216e5243b906a1bb777f693e5e6/python/torch_mlir_e2e_test/test_suite/scalar.py#L130) failed with error ``` ERROR: expected a value of type `torch.Tensor` but got `int`. ``` The baseline believes the result should a Tensor but the last 2...

The type promotion rule for div ops are different when both operands are integers (integer operands are promoted to default float type) see https://pytorch.org/docs/stable/generated/torch.div.html. To support this, `AtenDivTensorOp` and `AtenDivScalarOp`...

help wanted