Method inheritResolution

\brief Copy a read/write facing resolution for a specific data-type from one PcodeOp to another \param parent is the data-type that needs resolution \param op is the new reading PcodeOp \param slot is the new slot (-1 for write, >=0 for read) \param oldOp is the PcodeOp to inherit the resolution from \param oldSlot is the old slot (-1 for write, >=0 for read)