f0ae1f9133
1159: stm32 usb otg bug fixes r=Dirbaio a=chemicstry This fixes a couple of usb otg bugs that surfaced with `usb_ethernet` example from nrf: - Properly implemented `Endpoint::wait_enabled()` - Return `EndpointError::Disabled` when neccessary in `Endpoint::write()` Co-authored-by: chemicstry <chemicstry@gmail.com>