Patched version of acx driver to work with Kernel 3.0 and injection.

I detect some problems when using the driver in monitor mode. Seems to work just well with normal use. I don't think those problem are related with the patch to make it work with kernel 3.0.

Hope this driver will be useful for someone, feel free to send me any patches but if you want to have the state of the art of the driver, you better check the official repo of the acx100 driver, because this code is already old and probably I don't update it because I don't use this driver anymore.