The N9 chip is wl1271.
Injection module should not really be that difficult. Why don't you build it yourself as you need it? (might be a nice learning experience )
Because Mentalist, as I know him don't need it for him personallay. He asked it for the rest of the community, the N9/50 users might be interested. They only have to donate an devel device Also it would be easier for lxp as he already has some experience with the wl1251 Mentalist would have to start from scratch, in terms of experience with building drivers. Note: This is my view on *his* motivation