Fix systemd-udev warning - as the real operator is assumed, this is a cosmetic isssue.
Jul 09 20:12:02 systemd-udevd[381]: /etc/udev/rules.d/40-usb_modeswitch.rules:4 ATTR key takes '==', '!=', or '=' operator, assuming '='. Jul 09 20:12:02 systemd-udevd[381]: /etc/udev/rules.d/40-usb_modeswitch.rules:6 ATTR key takes '==', '!=', or '=' operator, assuming '='. Jul 09 20:12:02 systemd-udevd[381]: /etc/udev/rules.d/40-usb_modeswitch.rules:9 ATTR key takes '==', '!=', or '=' operator, assuming '='. Jul 09 20:12:02 systemd-udevd[381]: /etc/udev/rules.d/40-usb_modeswitch.rules:11 ATTR key takes '==', '!=', or '=' operator, assuming '='.