CONFIG_REALVIEW_EB_ARM11MP_REVB 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_REVB.
Result is shown for kernelversion 6.5.1

Support ARM11MPCore RevB Tile


Linux Kernel Configuration
└─>RealView platform type
└─>Support ARM11MPCore RevB Tile
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
Enable support for the ARM11MPCore Revision B tile on the
Realview(R) Emulation Baseboard platform. Since there are device
address differences, a kernel built with this option enabled is
not compatible with other revisions of the ARM11MPCore tile.