CONFIG_ARCH_SPEAR3XX is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

ST SPEAr3xx with Device Tree

modulename: spear-shirq.ko

and/or

spear3xx_clock.ko

and/or

pl080.ko

and/or

spear3xx.ko

configname: CONFIG_ARCH_SPEAR3XX

ST SPEAr Family
└─>ST SPEAr3xx with Device Tree
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
Supports for ARM's SPEAR3XX family

source code:
arch/arm/mach-spear3xx/spear3xx.c

depends
 or CONFIG_ARCH_MULTI_V5 |
| CONFIG_PLAT_SPEAR or  NOT CONFIG_ARCH_SPEAR13XX

is selected by
CONFIG_MACH_SPEAR320

is depended by
CONFIG_ARCH_SPEAR_AUTO