AMSTERDAM, Feb 27 (Reuters) - Dutch telecom KPN on Wednesday said two top executives from Mexico's America Movil, which holds an almost 30 percent stake in KPN, have been nominated to its supervisory board. America Movil Chief Financial Officer Carlos Garcia Moreno and Chief Operating Officer Oscar von Hauske were nominated to KPN's eight-member supervisory board, KPN said in a statement. The two appointments were proposed by the KPN supervisory board itself and will be voted on at the