[llvm] [TableGen] Use bitwise operations to access HwMode ID. (PR #88377)

[Ilya Leoshkevich via llvm-commits]

iii-i wrote:

The `getInstructionCases()` change looks good to me, thanks for handling the issue there! I most likely didn't notice it, because SystemZ, which is currently the only user of `getOperandBitOffset()`, does not use `EncodingInfos`.

https://github.com/llvm/llvm-project/pull/88377