Use `LINK_COMPONENTS` instead of manual `target_link_libraries` to link
lit-cpuid to LLVM components. This ensures that dylib is used along
with `LLVM_LINK_LLVM_DYLIB` rather than linking to component libraries
that may not be installed.
This fixes build failure on Gentoo after a dep on TargetParser component
was added in f09cf34d00.
Differential Revision: https://reviews.llvm.org/D140671