[llvm] [Mips] Fix clang crashes when compiling a variadic function while targeting mips3 (PR #130558)

[via llvm-commits]

yingopq wrote:

> > Because mips3 has the feature 'FeatureGP64
> 
> It seems to apply to newer processors as well.

Now, I only see mips3 use this feature.
```
def FeatureMips3       : SubtargetFeature<"mips3", "MipsArchVersion", "Mips3",
                                "MIPS III ISA Support [highly experimental]",
                                [FeatureMips2, FeatureMips3_32,
                                 FeatureMips3_32r2, FeatureGP64Bit,
                                 FeatureFP64Bit]>;
```



https://github.com/llvm/llvm-project/pull/130558