default or selected kernelversion does not have config value CONFIG_SND_AT91_SOC_SSC.
Result is shown for kernelversion 5.3.7

CONFIG_SND_AT91_SOC_SSC (not configurable)

modulename: snd-soc-at91-ssc.ko

configname: CONFIG_SND_AT91_SOC_SSC

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>SND_AT91_SOC_SSC
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
source code: