CONFIG_STIH41X_DEBUG_SBC_ASC1 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

SBC ASC1 UART

configname: CONFIG_STIH41X_DEBUG_SBC_ASC1

Low-level debug console UART
└─>SBC ASC1 UART
In linux kernel since version 3.11 (release Date: 2013-09-02)  
Say Y here if you want kernel low-level debugging support
on STiH415/416 based platforms like b2020. which has
default UART wired up to SBC ASC1.

If unsure, say N.


depends
 or CONFIG_ARCH_STI