Coreboot Config Cleanups

I have submitted a few patches to the coreboot team that cleanup some configuration items. Mostly, they remove duplicated and misplaced configuration items.

For instance, for some of the boards I looked at, they have a hard reset because their southbridge provides that functionality. However, the hard reset was configured in the mainboard config instead. I moved the configs to the southbridge and removed the config from the mainboard. There are a lot of config options similar to this one. I am going to try to get some more patched out tomorrow.