Add missing includes needed to prune LLVMContext.h include, NFC

These are a pre-requisite to removing #include "llvm/Support/Options.h"
from LLVMContext.h: https://reviews.llvm.org/D70280

GitOrigin-RevId: 4c1a1d3cf97e1ede466e2ad318f2811283ca0fb1
1 file changed