CONFIG_TXX9_7SEGLED is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_TXX9_7SEGLED (not configurable)

modulename: 7segled.ko

configname: CONFIG_TXX9_7SEGLED

Linux Kernel Configuration
└─>TXX9_7SEGLED
In linux kernel since version 2.6.28 (release Date: 2008-12-24)  
source code:
arch/mips/txx9/generic/7segled.c
is depended by
CONFIG_TOSHIBA_RBTX4939