default or selected kernelversion does not have config value CONFIG_ATH6KL_ENABLE_TARGET_DEBUG_PRINTS.
Result is shown for kernelversion 6.2.5

Target Debug support - Enable UART prints

configname: CONFIG_ATH6KL_ENABLE_TARGET_DEBUG_PRINTS

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Target Debug support - Enable UART prints
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
Enables uart prints