CONFIG_DEBUG_KS8695_UART is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

KS8695 Debug UART

configname: CONFIG_DEBUG_KS8695_UART

Kernel low-level debugging port
└─>KS8695 Debug UART
In linux kernel since version 4 (release Date: 2015-04-12)  
Say Y here if you want kernel low-level debugging support
on KS8695.