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

Buffalo Linkstation Live v3 (LS-CHL)

modulename: ls-chl-setup.ko

configname: CONFIG_MACH_LINKSTATION_LSCHL

Linux Kernel Configuration
└─>Orion Implementations
└─>Buffalo Linkstation Live v3 (LS-CHL)
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
Say 'Y' here if you want your kernel to support the
Buffalo Linkstation Live v3 (LS-CHL) platform.

source code:
arch/arm/mach-orion5x/ls-chl-setup.c