CONFIG_SAMSUNG_IRQ_UART is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
CONFIG_SAMSUNG_IRQ_UART (not configurable)
modulename: irq-uart.ko
configname: CONFIG_SAMSUNG_IRQ_UART
Linux Kernel Configuration
└─>SAMSUNG_IRQ_UART
In linux kernel since version 2.6.34 (release Date: 2010-05-16)
Internal configuration to build the IRQ UART demux code.