[llvm] [SHT_LLVM_BB_ADDR_MAP] Emit callsite offsets in the `SHT_LLVM_BB_ADDR_MAP` section. (PR #146563)

[Rahman Lavaee via llvm-commits]

rlavaee wrote:

> It's going to be a bit of a pain to review this with it including the old version support dropping changes too, so I'm going to hold off reviewing until that has landed and you've rebased.

Thank you. It's ready now.

https://github.com/llvm/llvm-project/pull/146563