This is a resend of the previous patch, now using the intel_ich_gpio_raise function.
I have now created a separate function, instead of hooking this code onto another board enable that also raises gpio21 (but with a different ICH).
Allan, i know you have given an Ack already, but this is now based on more general infrastructure. Can you give this patch a whirl too?
You will have to apply this patch here first though: http://patchwork.coreboot.org/patch/467/raw/