CONFIG_CPU_ARM1026 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Support ARM1026EJ-S processor

modulename: proc-arm1026.ko

configname: CONFIG_CPU_ARM1026

Linux Kernel Configuration
└─>Support ARM1026EJ-S processor
In linux kernel since version 2.6.12  
The ARM1026EJ-S is an implementation of the ARMv5TEJ architecture
based upon the ARM10 integer core.

Say Y if you want support for the ARM1026EJ-S processor.
Otherwise, say N.

source code: