[LLD][gold] Add -plugin-opt=no-new-pass-manager

-DENABLE_EXPERIMENTAL_NEW_PASS_MANAGER=on configured LLD and LLVMgold.so
will use the new pass manager by default. Add an option to
use the legacy pass manager. This will also be used by the Clang driver
when -fno-new-pass-manager (D92915) / -fno-experimental-new-pass-manager is set.

Reviewed By: aeubanks, tejohnson

Differential Revision: https://reviews.llvm.org/D92916