So they already are.
https://github.com/hbars/BPI-M2-Ultra-Berry-i2c-enable/blob/master/v40-bananapi-m2-berry-i2c-1.dts
https://github.com/hbars/BPI-M2-Ultra-Berry-i2c-enable/blob/master/v40-bananapi-m2-berry-i2c-2.dts
Just gonna leave this here, because-as how to promote the patch does not know... And about PMIC pins I saw.
Strange why was not describe the rest.