kernelconfig_penguin
default or selected kernelversion does not have config value CONFIG_ATH11K_SPECTRAL.
Result is shown for kernelversion 5.9-rc7

QCA ath11k spectral scan support

configname: CONFIG_ATH11K_SPECTRAL

Linux Kernel Configuration
└─> Device Drivers
└─> Network device support
└─> Wireless LAN
└─> QCA ath11k spectral scan support

Enable ath11k spectral scan support

Say Y to enable access to the FFT/spectral data via debugfs.