ipmi_si: Get rid of unused spacing and port fields

	 */

	bool                run_to_completion;

	/* The I/O port of an SI interface. */

	int                 port;

	/*

	 * The space between start addresses of the two ports.  For

	 * instance, if the first port is 0xca2 and the spacing is 4, then

	 * the second port is 0xca6.

	 */

	unsigned int        spacing;

	/* The timer for this si. */

	struct timer_list   si_timer;