CONFIG_CPU_ARM926T is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Support ARM926T processor

modulename: proc-arm926.ko

configname: CONFIG_CPU_ARM926T

Linux Kernel Configuration
└─>Support ARM926T processor
In linux kernel since version 2.6.12  
This is a variant of the ARM920. It has slightly different
instruction sequences for cache and TLB operations. Curiously,
there is no documentation on it at the ARM corporate website.

Say Y if you want support for the ARM926T processor.
Otherwise, say N.

source code:
/arch/arm/mm/