[Driver] Add -fsample-profile-use-profi

This patch enable `-sample-profile-use-profi` in Clang frontend as user-facing
feature. By using this patch, we can use the cflag of `-fsample-profile-use-profi`
instead of `-mllvm -sample-profile-use-profi`.

Reviewed By: hans, MaskRay

Differential Revision: https://reviews.llvm.org/D136846