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

Support for Momentum Ocelot board

modulename: fixup-ocelot.ko

configname: CONFIG_MOMENCO_OCELOT

Linux/MIPS Kernel Configuration
└─>Machine selection
└─>Support for Momentum Ocelot board
In linux kernel since version 2.6.12  
The Ocelot is a MIPS-based Single Board Computer (SBC) made by
Momentum Computer <http://www.momenco.com/>.

source code:
arch/mips/pci/