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

Momentum Ocelot-C board

modulename: fixup-ocelot-c.ko

configname: CONFIG_MOMENCO_OCELOT_C

System type
└─>Momentum Ocelot-C 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/

is selected by
CONFIG_MV643XX_ETH