Method trigger

fuzz/fuzz_targets/serial.rs:55–57

(&self, _index: InterruptIndex)

impl InterruptSourceGroup for TestInterrupt {
    fn trigger(&self, _index: InterruptIndex) -> Result<(), std::io::Error> {
        self.event_fd.write(1)
    }
    fn update(
        &self,
        _index: InterruptIndex,