core: Rename grl_media_get_license() parameters
core: Rename grl_media_get_license() parameters

Rename from "data" to "media", as it fits better.

Signed-off-by: Juan A. Suarez Romero <af79b5692270b306571bb1d8bbe0285ae3ac93d9@igalia.com>

grilofw/grilo,kyoushuu/grilo,MathieuDuponchelle/grilo,GNOME/grilo,jasuarez/grilo,MathieuDuponchelle/grilo,MathieuDuponchelle/grilo,GNOME/grilo,kyoushuu/grilo,grilofw/grilo,grilofw/grilo,kyoushuu/grilo,kyoushuu/grilo,jasuarez/grilo,jasuarez/grilo