CONFIG_MACH_TRIZEPS4 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Keith und Koep Trizeps4 DIMM-Module

modulename: trizeps4.ko

configname: CONFIG_MACH_TRIZEPS4

Select target board
└─>Keith und Koep Trizeps4 DIMM-Module
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
source code:
arch/arm/mach-pxa/trizeps4.c

depends
 or CONFIG_ARCH_PXA |
| CONFIG_TRIZEPS_PXA or  NOT CONFIG_ARCH_PXA_V7