890: Implement UsbSupply for a reference of SignalledSupply r=Dirbaio a=matoushybl Co-authored-by: Matous Hybl <hyblmatous@gmail.com>
890: Implement UsbSupply for a reference of SignalledSupply r=Dirbaio a=matoushybl Co-authored-by: Matous Hybl <hyblmatous@gmail.com>