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

Sibyte BCM91120C-CRhine

configname: CONFIG_SIBYTE_CRHINE

System type
└─>Sibyte BCM91120C-CRhine
In linux kernel since version 2.6.12  

depends
CONFIG_EXPERIMENTAL