CONFIG_CBE_CPUFREQ_SPU_GOVERNOR is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

CBE frequency scaling based on SPU usage

modulename: cpufreq_spudemand.ko

configname: CONFIG_CBE_CPUFREQ_SPU_GOVERNOR

Linux Kernel Configuration
└─>Cell Broadband Engine options
└─>CBE frequency scaling based on SPU usage
In linux kernel since version 2.6.27 (release Date: 2008-10-09)  
This governor checks for spu usage to adjust the cpu frequency.
If no spu is running on a given cpu, that cpu will be throttled to
the minimal possible frequency.

source code:
depends
CONFIG_CPU_FREQ
CONFIG_PPC_CELL
CONFIG_SPU_FS