I'm sorry, but no. The reason Trump won was 'cism. No ifs, ands, or buts about it.
It's true that racists would be likely to vote Republican anyway, but Trump got racists out that don't usually vote.
The reason I can say this is because there's pretty much no other reason to vote Trump. It's not like people were voting for Trump because of his policy initiatives or political experience. There's no way you're convincing me that his excellent and well thought out trade policy was his main draw.
And him doing slightly better with minorities than Romney isn't say much considering how abysmal Romney's numbers were.