default or selected kernelversion does not have config value CONFIG_ATH6KL_BT_UART_FC_POLARITY.
Result is shown for kernelversion 6.2.5
UART Flow Control Polarity
configname: CONFIG_ATH6KL_BT_UART_FC_POLARITY
Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>UART Flow Control Polarity
In linux kernel since version 2.6.37 (release Date: 2011-01-04)
Configures the polarity of UART Flow Control. A value of 0 implies active low and is the default setting. Set it to 1 for active high.