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

Freescale Local Bus support

modulename: fsl_lbc.ko

configname: CONFIG_FSL_LBC

Linux Kernel Configuration
└─>Bus options
└─>Freescale Local Bus support
In linux kernel since version 2.6.26 (release Date: 2008-07-13)  
Enables reporting of errors from the Freescale local bus
controller. Also contains some common code used by
drivers for specific local bus peripherals.

source code:
arch/powerpc/sysdev/fsl_lbc.c
depends
CONFIG_FSL_SOC