CONFIG_NEC_MARKEINS is not available for thedefaultarchitecture x86.
Result is shown for architecture mips
default or selected kernelversion does not have config value CONFIG_NEC_MARKEINS.
Result is shown for kernelversion 6.9.9

NEC EMMA2RH Mark-eins board

modulename: ops-emma2rh.ko

and/or

prom.ko

and/or

irq.ko

configname: CONFIG_NEC_MARKEINS

System type
└─>NEC EMMA2RH Mark-eins board
In linux kernel since version 2.6.28 (release Date: 2008-12-24)  
This enables support for the NEC Electronics Mark-eins boards.

source code:
arch/mips/pci/