CONFIG_CPU_SUPPORTS_UNCACHED_ACCELERATED is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_CPU_SUPPORTS_UNCACHED_ACCELERATED (not configurable)

configname: CONFIG_CPU_SUPPORTS_UNCACHED_ACCELERATED

Linux Kernel Configuration
└─>CPU_SUPPORTS_UNCACHED_ACCELERATED
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
is depended by
CONFIG_CPU_P5600