[PATCH 3/4] at91 : remove wait_for_interrupt definition

[Rob Lee]

Hey Daniel and at91 people,

Just FYI, in my latest cpuidle consolidation patchset I also included
a patch to make the consolidation changes to the at91 cpuidle.c.  I
realize other work is going on with at91 cpuidle but I decided to go
ahead and include it, for reference if nothing else.  For another
cpuidle consolidation patch coming soon, please let me know if you'd
rather me not submit the changes to the at91 cpuidle.c.

Best Regards,
Rob