CONFIG_LEDS_CLASS is defined only if led-class is built-in, otherwise
when it is a module the option is called CONFIG_LEDS_CLASS_MODULE. Led
support should also be activated in this case.
Signed-off-by: NEric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>