Dwarf-info doesn't actually provide alignment info with the current
tools I'm using (but it does look like DW_AT_alignment was added in a
recent version), so for now this is just a heuristic based on the
largest base/pointer type.
This heuristic is still useful info and probably correct for the types
littlefs cares about (no SIMD here!).
This is also another field that folds using max, so that's fun.
Christopher Haster
7c8afd26cf