[llvm] [TableGen] Handle Windows line endings in x86-fold-tables.td test (PR #112997)

[Daniel Paoliello via llvm-commits]

dpaoliello wrote:

> Hi, this is causing a failure on the aix bot https://lab.llvm.org/buildbot/#/builders/64/builds/1269 would you be able to take a look? The cause is because `diff` does not support `--strip-trailing-cr` option. There was a similar case that was resolved here #108871. Thanks in advance!

Ah, perfect, I was going to ask if there was a way to do that: should have a PR out shortly...

https://github.com/llvm/llvm-project/pull/112997