CONFIG_LEMOTE_MACH2F is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

Lemote Loongson 2F family machines

modulename: fixup-lemote2f.ko

configname: CONFIG_LEMOTE_MACH2F

Machine Type
└─>Lemote Loongson 2F family machines
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
Lemote Loongson 2F family machines utilize the 2F revision of
Loongson processor and the AMD CS5536 south bridge.

These family machines include fuloong2f mini PC, yeeloong2f notebook,
LingLoong allinone PC and so forth.

source code:
arch/mips/pci/