[bindings/go] Add coroutine passes

Add Go bindings for CoroEarly, CoroSplit, CoroElide and CoroCleanup.

Differential Revision: https://reviews.llvm.org/D50951

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@340148 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed