Update config files:
    
    * CONFIG_BATMAN_ADV_NC=y, because other BATMAN_ADV options are all
      enabled so why not this one.
    * CONFIG_GPIO_SCH=m, CONFIG_GPIO_PCH=m, because we support all other
      features of these pieces of hardware.
    * CONFIG_INTEL_POWERCLAMP=m, because this small driver might be
      useful in specific cases, and there's no obvious reason not to
      include it.