[compiler-rt] [tsan][riscv] add Go race detector support for RISC-V sv39 VMA (PR #154701)

[Thurston Dang via llvm-commits]

https://github.com/thurstond approved this pull request.

New mapping looks good to me. Thanks for the patch!

Please fix the clang-format, as @fmayer has noted.

https://github.com/llvm/llvm-project/pull/154701