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

[James Henderson via cfe-commits]

jh7370 wrote:

> (Friendly Ping:)

Sorry, a combination of PTO and other factors have delayed me in getting to this. It's on my radar, but will likely be a few more days before I can sink my teeth into more complex reviews like this.

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