[yaml2obj] Refactor and abstract yaml2dwarf functions

This abstracts the code for emitting DWARF binary from the DWARFYAML types into reusable interfaces that could be used by ELF and COFF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288990 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed