[llvm] [BOLT][Instrumentation] Initial instrumentation support for RISCV64 (PR #133882)

[Kazu Hirata via llvm-commits]

kazutakahirata wrote:

> @WangJee @svs-quic @aaupov I've uploaded #136172.

I didn't realize https://github.com/llvm/llvm-project/pull/136129 was already up.  Thanks for the fix!

https://github.com/llvm/llvm-project/pull/133882