Random number generator support

configname: CONFIG_ATH9K_HWRNG

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>Random number generator support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
This option incorporates the ADC register output as a source of
randomness into Linux entropy pool (/dev/urandom and /dev/random)

Say Y, feeds the entropy directly from the WiFi driver to the input