CONFIG_ETRAX_LED2R is not available for thedefaultarchitecture x86.
Result is shown for architecture cris
default or selected kernelversion does not have config value CONFIG_ETRAX_LED2R.
Result is shown for kernelversion 6.7-rc3

Second red LED bit

configname: CONFIG_ETRAX_LED2R

Linux Kernel Configuration
└─>CRIS v10 options
└─>Second red LED bit
In linux kernel since version 2.6.12  
Bit to use for the second red LED.
Most Axis products use bit 5 here.
For products with only one controllable LED,
set this to same as CONFIG_ETRAX_LED1G (normally 2).