CONFIG_CPU_FREQ_SA1110 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_CPU_FREQ_SA1110 (not configurable)

modulename: cpu-sa1110.ko

configname: CONFIG_CPU_FREQ_SA1110

Linux Kernel Configuration
└─>CPU Frequency scaling
└─>CPU_FREQ_SA1110
In linux kernel since version 2.6.12  
source code:
arch/arm/mach-sa1100/cpu-sa1110.c
depends
CONFIG_CPU_FREQ
CONFIG_SA1100_ASSABET or CONFIG_SA1100_CERF or CONFIG_SA1100_PT_SYSTEM3
CONFIG_ARCH_IMX or CONFIG_ARCH_INTEGRATOR or CONFIG_ARCH_OMAP or CONFIG_ARCH_PXA or CONFIG_ARCH_SA1100 or CONFIG_ARCH_HAS_CPUFREQ

is depended by
CONFIG_SA1100_NANOENGINE