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

CONFIG_FSL_LBC (not configurable)

modulename: fsl_lbc.ko

configname: CONFIG_FSL_LBC

Linux/PowerPC Kernel Configuration
└─>Bus options
└─>FSL_LBC
In linux kernel since version 2.6.26 (release Date: 2008-07-13)  
Freescale Localbus support

source code: