Update can_set_ctrlmode() documentation
Update can_set_ctrlmode() documentation

Signed-off-by: Nikita Edward Baruzdin <93c852c8b5924dc204a46e5be1b96017a0e37772@gmail.com>
Signed-off-by: Marc Kleine-Budde <4a0ea1158d3cc63151119c05b1bff00c0bdbf421@pengutronix.de>

lalten/libsocketcan,lalten/libsocketcan,lalten/libsocketcan