external:ubuntu-core-16-arm-32 .../tests/main/security-device-cgroups-serial-port# udevadm info -e | grep ttyS
P: /devices/platform/soc/3f215040.uart/tty/ttyS0
N: ttyS0
E: DEVNAME=/dev/ttyS0
E: DEVPATH=/devices/platform/soc/3f215040.uart/tty/ttyS0