TOKYO  - Prime Minister Yoshihiko Noda has decided to dissolve Japan’s parliament as early as Friday, with an election possibly next month, media said Tuesday, in a move likely to unseat him from power. Noda will call an election for as early as December 16 or as late as January 20, according to major news media, including the Nikkei business daily and the liberal-leaning Asahi Shimbun. After months of speculation over the date of the next national ballot, the issue came to the fore on Monday afternoon, with Noda seen pushing a plan to join a vast trans-Pacific free trade deal as one of his core campaign pledges. That would distinguish his Democratic Party of Japan (DPJ) from the main opposition party, which is largely against the pact.