CONFIG_SAMSUNG_DEV_BACKLIGHT is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
CONFIG_SAMSUNG_DEV_BACKLIGHT (not configurable)
configname: CONFIG_SAMSUNG_DEV_BACKLIGHT
Linux Kernel Configuration
└─>Samsung S3C64XX
└─>SAMSUNG_DEV_BACKLIGHT
In linux kernel since version 3.1 (release Date: 2011-10-24)
Compile in platform device definition LCD backlight with PWM Timer