CONFIG_EBIU_MODEVAL is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_EBIU_MODEVAL.
Result is shown for kernelversion 6.7-rc3

Flash Memory Mode Control Register

configname: CONFIG_EBIU_MODEVAL

Linux Kernel Configuration
└─>Blackfin Processor Options
└─>Flash Memory Mode Control Register
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
depends
CONFIG_BF54x