Not a single thing you have said is correct.
1) a patent is required to list as inventors every person who contributed to the conception or reduction to practice of the invention.
2) apple says they have an email from him to Qualcomm, predating the patent application, that shows he is an inventor
3) if he is an inventor, he needs to be added to the patent. At that point, he can license the patent to apple or assign his rights to the patent to apple.
4) an IP agreement does not solve this for Qualcomm.