CONFIG_REALVIEW_EB_ARM11MP is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_REALVIEW_EB_ARM11MP.
Result is shown for kernelversion 6.8.5

Support ARM11MPCore Tile

configname: CONFIG_REALVIEW_EB_ARM11MP

Linux Kernel Configuration
└─>ARM Ltd. RealView family
└─>Support ARM11MPCore Tile
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
Enable support for the ARM11MPCore tile fitted to the Realview(R)
Emulation Baseboard platform.