Ok, the new update..
I've successfully to port libcamera without need Overlay patch, the modification is done with heavy modifying on libcameraservice, libcamera_client, camera.fb0 also lot of modification on kernel.
So, for now is no need to full recompile the system, to get camera working.
By the way, ardx haven't finished the new cm9 rom, still have problem on wifi and other stuff.
So I've make the patch for fixing camera problem, here is the patch:
update-cm-9.0.0camera-1.zip
http://download.andro-id.net/index.php?dir=FIH-FB0/Cyanogenmod/&file=update-cm-9.0.0camera-1.zip
I've test the patch on edowar alpha5 and also on ardx build's, the Camera is working, but the Video recording will crash.
Camera recording can be fixed by modifying Camera.apk (compiling from source), and also modifying the media_profiles.xml.
But, now we have new problem. with using my kernel, we will have wifi problem.
the ardx kernel's have wifi problem too.
I don't know what edowar have changes on the kernel, so the wifi can only work with his kernel.