Ok I'll give you a little information
1) There is a very highly likely chance that the laser-auto-focus will not work. Of course we don't know until we try but I am not confident because getting things like that which are not in common android source code is very difficult to get working.
2) There are many versions of the ZF2 laser, some come with different kernels therefore will need sources for each kernel (potentially). They also might share the same source (won't know unless I take a good look at it)
3) I am downloading the Kernel source for the ZE551KL and will upload it to github for a starting point. You can easily fork it from there into your github repo. It should be up in a day or less. By the looks of your github repo, you have a different model (one with a 410 snapdragon). Kernel sources are available from the asus.com website under support. You can download it from there for now and I can show you how to upload it to github.
4) If you plan on supporting all the ZF2 laser models, I would suggest for the device repos to make a "common" repo as they will share a lot of the same code, then have separate repos for each model for all the unique characteristics of them.
Edit: kernel uploading to my github. Internet is slow but you can see it soon by going to
https://github.com/Hardslog/android_kernel_asus_zf2l
