[llvm] [AMDGPU] Also disable lit64() from VOP3 and inline constant (PR #196421)

[Stanislav Mekhanoshin via llvm-commits]

rampitec wrote:

We have the same problem if we are using `lit()` modifier, but I believe instead of prohibiting it we need to force 32-bit literal encoding, just like SP3.

https://github.com/llvm/llvm-project/pull/196421