[llvm] [NFC][TableGen] Drop OperandInfo::addField/fields() wrappers and use OperandInfo::Fields instead (PR #195489)

[Prerona Chaudhuri via llvm-commits]

pchaudhuri-nv wrote:

Ahh get it :) 

I was also wondering why does my email id not show in the commits that I had done so far.

I have updated the settings and I am using my work email id.

Thanks for guiding!

https://github.com/llvm/llvm-project/pull/195489