CONFIG_TQM8540 is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

TQ Components TQM8540

configname: CONFIG_TQM8540

Linux Kernel Configuration
└─>Machine Type
└─>TQ Components TQM8540
In linux kernel since version 2.6.16 (release Date: 2006-03-19)  
This option enables support for the TQ Components TQM8540 board.