CONFIG_ETRAX_LED6G is not available for thedefaultarchitecture x86.
Result is shown for architecture cris
default or selected kernelversion does not have config value CONFIG_ETRAX_LED6G.
Result is shown for kernelversion 6.7-rc3

Sixth green LED bit

configname: CONFIG_ETRAX_LED6G

Linux Kernel Configuration
└─>CRIS v10 options
└─>Sixth green LED bit
In linux kernel since version 2.6.12  
Bit to use for the sixth green LED. The "Drive" LED.
For products with only one or two controllable LEDs,
set this to same as CONFIG_ETRAX_LED1G (normally 2).