[llvm/Orc] Fix ExecutionEngine module build breakage

This patch updates the llvm module map to reflect changes made in
`5efc71e1` and fixes the module builds
(`-DLLVM_ENABLE_MODULES=On`).

Differential Revision: https://reviews.llvm.org/D94057



Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>