default or selected kernelversion does not have config value CONFIG_CFG80211_REG_DEBUG.
Result is shown for kernelversion 6.5.1

cfg80211 regulatory debugging

configname: CONFIG_CFG80211_REG_DEBUG

Linux Kernel Configuration
└─>Networking support
└─>Wireless
└─>cfg80211 regulatory debugging
In linux kernel since version 2.6.29 (release Date: 2009-03-23)  
You can enable this if you want to debug regulatory changes.
For more information on cfg80211 regulatory refer to the wireless
wiki:

http://wireless.kernel.org/en/developers/Regulatory

If unsure, say N.