CONFIG_S3C_GPIO_PULL_S3C2443 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_S3C_GPIO_PULL_S3C2443 (not configurable)

configname: CONFIG_S3C_GPIO_PULL_S3C2443

Linux Kernel Configuration
└─>S3C_GPIO_PULL_S3C2443
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
Internal configuration to enable the correct GPIO pull helper for S3C2443-style GPIO