Updated module to build on 3.2.0 kernel.

Hi,

Thanks for making this available!  I tried using the tty0tty module from sourceforge recently to simulate a device that I communicated with by use of a serial library.  The library performed tcgetattr and tcsetattr commands which were not supported by the sourceforge version, but the copy in this repository does.  I had to make the (trivial) changes to get the module to build on the 3.2.0 kernel (Unbuntu 12.04 LTS base), so I thought I'd offer them back if you're interested.

I understand if you want to keep your module where it's at due to the kernel version you're using.  Perhaps the 3.2.0 version could be a branch or something...

Anyway, thanks again for making this available.  It was quite helpful!

carpie