CONFIG_ARCH_SPEAR13XX is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
ST SPEAr13xx
modulename: spear13xx.ko
configname: CONFIG_ARCH_SPEAR13XX
Linux Kernel Configuration
└─>ST SPEAr Family
└─>ST SPEAr13xx
In linux kernel since version 3.1 (release Date: 2011-10-24)
Supports for ARM's SPEAR13XX family