kernelconfig_penguin
default or selected kernelversion does not have config value CONFIG_ATH6KL_ENABLE_TARGET_DEBUG_PRINTS.
Result is shown for kernelversion 3.1.9

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

Enables uart prints