[mlir] Fix some cmake dependencies in LLVMIR Dialect (#66956)

While looking into reducing needless interdependencies between upstream
MLIR dialects and passes, I discovered that the ROCDL Dialect
redundantely uses links in `VectorToLLVM` conversion pass when it
actually requires just the LLVM Dialect. Furthermore, after a build
failure, I ran `ninja -t missingdeps` which revealed that the NVVM
Dialect depends on headers of the GPU dialect
(https://github.com/llvm/llvm-project/blob/211c9752c8200fbb3ff7be1f6aa98037901758ce/mlir/include/mlir/Dialect/LLVMIR/NVVMDialect.h#L18)
without stating so in CMake.
This causes flaky builds as it is not guaranteed that the header exists
prior to the dialect being compiled.