[llvm] [NFC][LLVM] Fix Intrinsics.td to adhere to 80 col limit (PR #199346)

[Rahul Joshi via llvm-commits]

jurahul wrote:

@ojhunt the purpose/value is the same purpose/value as the coding standard. We have been following the 80-column limit downstream in our code and I do intend to make changes to this file, so that was the motivation to clean up the formatting before I start working on these changes. I do agree with the issue of downstream conflicts, but since I was not modifying the target specific .td files, I didn't think there may be too many. I am happy to revert if I hear more complaints. Meanwhile, let me start an RFC to see if we do need to enforce 80 column limit for .td files. 

https://github.com/llvm/llvm-project/pull/199346