PoCL: Float16 support #312
Description
- on FreeBSD, it doesn't compile (so is forcibly disbabled): Float16-related build failure on FreeBSD pocl/pocl#1776
- on x86, it requires libsvml or libmvec (post pocl/pocl@af09bac), both of which we don't have packaged
- on arm, it requires SLEEF which seems to work