[llvm] [RISCV][NFC] Pass MCSubtargetInfo instead of FeatureBitset in RISCVMatInt (PR #71770)

[Wang Pengcheng via llvm-commits]

wangpc-pp wrote:

> How does hasFeatures reduce indirection? We have another layer of data structure isn't that more indirection?

Oh I mean the name `hasFeature` is more descriptive and the caller of `RISCVMatInt` have no need to call `getFeatureBits()`.

https://github.com/llvm/llvm-project/pull/71770