[llvm] [SHT_LLVM_BB_ADDR_MAP] Add an option to skip emitting bb entries (PR #114447)

[Lei Wang via llvm-commits]

https://github.com/wlei-llvm commented:

> Some nits in the new llvm-readobj test. Happy for this to go on once those are done (I've not reviewed the rest of the PR really).

Thank you for the suggestions! 

https://github.com/llvm/llvm-project/pull/114447