CONFIG_DEBUG_OCD is not available for thedefaultarchitecture x86.
Result is shown for architecture unicore32

Kernel low-level debugging via On-Chip-Debugger

configname: CONFIG_DEBUG_OCD

Linux Kernel Configuration
└─>Kernel low-level debugging via On-Chip-Debugger
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
Say Y here if you want the debug print routines to direct their
output to the UniCore On-Chip-Debugger channel using CP #1.

depends
CONFIG_DEBUG_LL