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

IBM Currituck (476fpe) Support

modulename: currituck.ko

configname: CONFIG_CURRITUCK

Linux Kernel Configuration
└─>IBM Currituck (476fpe) Support
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This option enables support for the IBM Currituck (476fpe) evaluation board

source code: