[clang] [lanai] Add back the ability to set the memory model with --mcmodel. (PR #150575)

[Jacques Pienaar via cfe-commits]

jpienaar wrote:

Something like https://github.com/llvm/llvm-project/commit/757d8b3efdd82a02973d0ab4ebaa2e05e9ab7ae0 is probably the simplest way to just check that the flags are accepted.

https://github.com/llvm/llvm-project/pull/150575