compat_ioctl has to be populated for 32 bit userspace applications to work
with 64 bit kernels.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Olof Johansson <olof@lixom.net>