leds: trigger: netdev: Add module alias ledtrig:netdev

Add module alias ledtrig:netdev to enable auto-loading of the module.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/84a1bbd3-1ac7-4f37-849a-7f4d31698f76@gmail.com


Signed-off-by: Lee Jones <lee@kernel.org>