New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/issues/29801#issuecomment-813795353

Comment:
It seems `corei7` is mostly equivalent to nehalem:

```
  {"corei7", PROCESSOR_NEHALEM, CPU_NEHALEM, PTA_NEHALEM},
```

I don't know if it makes sense to force a different target, then - `corei7` probably generates slightly better code here than `x86_64` would. Maybe we it might just be enough to document these constraints in the template itself. Thanks for the hint!