Turn of Kern.Debug logging for a custom LEDE build

I've been compiling Lede builds for my wrt1900ac. As of last 2-3 weeks or so i notice the some sort of kernal debug log seems to be enabled by default in the build. Is there a way i can turn it before i compile a new build.

I see entries like: Tue Jul 3 12:04:37 2018 kern.debug kernel: [ 177.475670] ieee80211 phy1: change: 0x100