linux-oz-2.6: Updates to dev branch. Add LED class and first attempt at LED Triggers...

linux-oz-2.6: Updates to dev branch. Add LED class and first attempt at LED Triggers core code. Add LED drivers for corgi/spitz. Add various prototype LED triggers. All accessed via /sys/class/leds. Also fix bug in calculating the zImage file size in linux-openzaurus.inc as the previous version didn't work with sparse files (zImage has some sparse data areas). Updated defconfigs to match LED changes and to attempt to keep spitz within the zaurus bootloader size limit.