score:2
Despite what is claimed in wikipedia (see Rajib's comment), actually, drāviḍa – occurs already in the Mahabharata, as is mentioned by Turner:
6632 *drāmiḍa - , dramiḍa -- , drāviḍa -- MBh., draviḍa -- m. Mn. ʻ name of a people, Dravidian ʼ. [EWA ii 73] Pk. damila -- , daviḍa -- , davila -- m.; OSi. demeḷ ʻ Tamil ʼ, Si. demaḷā.
http://dsalsrv02.uchicago.edu/cgi-bin/philologic/getobject.pl?p.2:14.soas