CONFIG_SAMSUNG_DEV_IDE is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_SAMSUNG_DEV_IDE (not configurable)

configname: CONFIG_SAMSUNG_DEV_IDE

Linux Kernel Configuration
└─>Samsung Common options
└─>SAMSUNG_DEV_IDE
In linux kernel since version 2.6.36 (release Date: 2010-10-20)  
Compile in platform device definitions for IDE