When the Bears and Packers resume their rivalry this month, at least eight Chicagoans will be on good terms with the folks north of the border.Milwaukee-based corporate law firm Whyte, Hirschboeck, Dudek S.C. has announced a Chicago expansion, absorbing litigation boutique Varga, Berger, Ledsky, Hayes & Casey.The new firm will be known as Whyte, Hirschboeck, Dudek S.C.The Varga, Berger office at 125 S. Wacker Drive is WHD’s new Chicago office. WHD’s one Chicago attorney will join that office, giving the …