[llvm] Reland "[llvm-readobj] Dump callgraph section info for ELF" (PR #176260)

[Prabhu Rajasekaran via llvm-commits]

Prabhuk wrote:

> My apologies for not getting back to this as quickly as I promised - I've had a combination of too many reviews and ill health to deal with.
> 
> I've run out of time to review this further today, but there's a bunch of comments to respond to and will pick this back up either tomorrow or early next week, hopefully.

Thanks for continuing to provide reviews and comprehensive explanations for the feedback. I hope you are feeling better. I just got back from my break and will be returning to this patch mid-week. 

https://github.com/llvm/llvm-project/pull/176260