[TESTING] SCBS: Improved battery meter system

[jonpry]

The scbs rootfs just includes the scbs binary (/bin/scbs), and there are some trivial changed to the init script that run scbs on startup and also do a better job of creating the camera device nodes. This could in theory be moved to system.img but putting it in rootfs made it easier to distribute.

Detule,

Your model looks ok to me. We will need to get more data to see what Se should be on rhod400, but 12ma doesn't sound impossible.