[WebAssembly] Add languages from debug info to producers section

Reviewers: aheejin, dschuff, sbc100

Subscribers: aprantl, jgravelle-google, hiraditya, sunfish

Differential Revision: https://reviews.llvm.org/D56889

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351507 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed