Add `Idempotent` trait to `arith.{andi,ori}`.
Reviewed By: mehdi_amini
Differential Revision: https://reviews.llvm.org/D114574
Add `Idempotent` trait to `arith.{andi,ori}`.
Reviewed By: mehdi_amini
Differential Revision: https://reviews.llvm.org/D114574