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

Intel DBPXA250 Development Platform

modulename: lubbock.ko

configname: CONFIG_ARCH_LUBBOCK

Select target board
└─>Intel DBPXA250 Development Platform
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
source code:
arch/arm/mach-pxa/lubbock.c

depends
 or CONFIG_ARCH_PXA

is selected by
CONFIG_PCMCIA_PXA2XX