default or selected kernelversion does not have config value CONFIG_SOUND_SH_DAC_AUDIO_CHANNEL.
Result is shown for kernelversion 5.4.229
DAC channel
configname: CONFIG_SOUND_SH_DAC_AUDIO_CHANNEL
Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Open Sound System (DEPRECATED)
└─>DAC channel