[clang] [llvm] [MC,llvm-readobj,yaml2obj] Support CREL relocation format (PR #91280)

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DEBADRIBASAK wrote:

[jh7370](https://github.com/jh7370) sorry for pinging again. I will be highly grateful if you kindly review this pull request. This change will unblock some of our internal tasks and timely completion of this is crucial for us. Thank you in advance. 

https://github.com/llvm/llvm-project/pull/91280