update_cpu_features: Add x86 alias and arm override

Before this commit, the name `v9.5a` was being used for two different features, and one was overwriting the other in the `all_features` array.

`arrowlake_s` is an alias for `arrowlake-s`
cf2558e971Ryan Liptak committed on 8/7/2024, 3:56:50 PMparentf9f8942
1 file changedLine totals unavailable