compat-wireless: backport tty termios changes

compat-wireless: backport tty termios changes

This patch requires a manual backport:

commit adc8d746caa67fff4b53ba3e5163a6cbacc3b523
Author: Alan Cox <alan@linux.intel.com>
Date:   Sat Jul 14 15:31:47 2012 +0100

    tty: move the termios object into the tty

    This will let us sort out a whole pile of tty related races. The
    alternative would be to keep points and refcount the termios objects.
    However
    1. They are tiny anyway
    2. Many devices don't use the stored copies
    3. We can remove a pty special case

    Signed-off-by: Alan Cox <alan@linux.intel.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We cannot use compat.git for this given that the assignment
was not done through a static inline helper.

Signed-off-by: Luis R. Rodriguez <mcgrof@frijolero.org>