[CMake] Serialize `build_native_tool`

To prevent race in `NATIVE`, let each action depend on preceding action.
At the moment, this is restricted only for "Visual Studio".

For example,

  - `llvm-tblgen-host` depends on the target's `llvm-tblgen`.
  - `clang-tblgen-host` depends on the target's `clang-tblgen` and `llvm-tblgen-host`.

This is rework for D54153.
`build_native_tool` has been introduced since D60024.

Differential Revision: https://reviews.llvm.org/D149072