Configure the XO-1's lid switch GPIO to trigger an SCI interrupt, and

Configure the XO-1's lid switch GPIO to trigger an SCI interrupt, and
correctly expose this input device which can be used as a wakeup source.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Andres Salomon <dilinger@queued.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>