max8997_vibrator: /sys/vibrator/vibrator_level

enable:
echo 9 > /sys/vibrator/vibrator_level
cat /sys/vibrator/vibrator_level

disable:
echo -1 > /sys/vibrator/vibrator_level
cat /sys/vibrator/vibrator_level

Conflicts:
	drivers/motor/max8997_vibrator.c

Conflicts:
	drivers/motor/max8997_vibrator.c