bin/config --libs does not list "-lLLVMGenXIntrinsics"

**Describe the bug**
llvm/bin/config --libs does not include "-lLLVMGenXIntrinsics" when I believe that it should.

**To Reproduce**
Run llvm/bin/config --libs.

**Environment (please complete the following information):**

- OS: Linux
- Target device and vendor: Not applicable to llvm/bin/config.
- DPC++ version: Not applicable.
- Dependencies version: Not applicable.