i8k: Add MODULE_DEVICE_TABLE macro

This patch adds MODULE_DEVICE_TABLE macro so i8k.ko module can be automatically
loaded based on dmi system alias.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>