[yaml2obj/obj2yaml] - Do not trigger llvm_unreachable when dumping/parsing relocations and e_machine is unsupported.
Currently when e_machine is set to something that is not supported by YAML lib,
then tools fail with llvm_unreachable.
In this patch I allow them to handle relocations in this case.
It can be used to dump and create objects for broken or unsupported targets.
Differential revision: https://reviews.llvm.org/D67657
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@372377 91177308-0d34-0410-b5e6-96231b3b80d8