CONFIG_FIT_IMAGE_FDT_OCELOT is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

Include FDT for Microsemi Ocelot development platforms

configname: CONFIG_FIT_IMAGE_FDT_OCELOT

Linux Kernel Configuration
└─>Include FDT for Microsemi Ocelot development platforms
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Enable this to include the FDT for the Ocelot development platforms
from Microsemi in the FIT kernel image.
This requires u-boot on the platform.