CONFIG_MARKEINS is not available for thedefaultarchitecture x86.
Result is shown for architecture mips
default or selected kernelversion does not have config value CONFIG_MARKEINS.
Result is shown for kernelversion 5.3.7

NEC EMMA2RH Mark-eins

modulename: irq.ko

and/or

ops-emma2rh.ko

configname: CONFIG_MARKEINS

System type
└─>NEC EMMA2RH Mark-eins
In linux kernel since version 2.6.18 (release Date: 2006-09-19)  
This enables support for the R5432-based NEC Mark-eins
boards with R5500 CPU.

source code:
arch/mips/emma2rh/markeins/