BUZZ — Brinker rises as Jefferies upgrades to 'buy', says Chili's comeback is complete
* Shares of Brinker International, owner of casual-dining chain Chili, rise more than 3% to $209.21 premarket * Jefferies upgrades stock to "buy" from "hold"; hikes PT to $255 from $230, implying a 26% upside to stock's last close * Says Chili's comeback is complete - sales per restaurant rose to over $5 million from $