samsung_battery: Charge level interface v2a

- bug fix for wrong if statements causing the settings to be reset
performance: Turn CPUs online while active

Since we don't have separate active hotplugging logic aside the in-governor one in pegasusq, switching to performance governor will always just remain with whatever cores were online before the switch. This activates all available cores on governor start, and turns additional cores off when stopped.
fs: add native exFAT support (Samsung OSRC 1.2.4)

http://opensource.samsung.com/reception/receptionSub.do?method=sub&sub=F&searchValue=exfat
exFAT 1.2.5 (Samsung OSRC)
Remove drivers/exfat, we have built-in exfat now
Regenerate config
Regenerate config