I don't think he is ever going to support Bitcoin because that would basically mean that he refuses to support the official currency of the US, the dollar. In my view, many Americans might think of this as some kind of high treason. So it is hardly possible that Trump would show his open support for Bitcoin even if he was in fact quite friendly toward this coin. Though I'm not sure if he ever heard about Bitcoin.
Trump has this America first motto.
Most of the mining farms are not in America, but in China.
For the moment bitcoin is too small for him to think about it. He has bigger fishes to fry. That's why I don't think his election will have any impact on bitcoin the next two years.
But if bitcoin would really start an enormous rise during his presidency, he would take counter measures.
Maybe regulate the american bitcoin market, maybe built subsidized mining farms in America, maybe declare bitcoin to be illegal. Who knows...