CONFIG_NXP_STB225 is not available for thedefaultarchitecture x86.
Result is shown for architecture mips
NXP 225 board
configname: CONFIG_NXP_STB225
System type
└─>NXP 225 board
In linux kernel since version 2.6.28 (release Date: 2008-12-24)
Support for NXP Semiconductors STB225 Development Board.