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

Linkstation / Kurobox(HG) from Buffalo

modulename: linkstation.ko


Linux Kernel Configuration
└─>Linkstation / Kurobox(HG) from Buffalo
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Select LINKSTATION if configuring for one of PPC- (MPC8241)
based NAS systems from Buffalo Technology. So far only
KuroboxHG has been tested. In the future classical Kurobox,
Linkstation-I HD-HLAN and HD-HGLAN versions, and PPC-based
Terastation systems should be supported too.

source code: