[compiler-rt] [llvm] [X86] Add znver2 detection for Renoir CPUs (PR #74955)

[Simon Pilgrim via llvm-commits]

RKSimon wrote:

I tend to double check with https://github.com/torvalds/linux/blob/master/drivers/hwmon/k10temp.c#L440 as that has good Ryzen cpu model coverage

@ganeshgit can usually help with any missing cases as well.

https://github.com/llvm/llvm-project/pull/74955