By Katanga Johnson WASHINGTON (Reuters) -The U.S. Securities and Exchange Commission (SEC) is working to get some cryptolending companies properly registered if they operate more as investment firms, the head of the Wall Street regulator told CNBC in an interview on Thursday. SEC Chair Gary Gensler also said it was up to large financial institutions to decide whether they want to include crypto options in their portfolios for clients, but that the risks of crypto tokens need to be made public. “We have focused on this area because many of these firms…may well be investment companies taking h…