leds: trigger: netdev: Extend speeds up to 10G

Add 2.5G, 5G and 10G as available speeds to the netdev LED trigger.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/99e7d3304c6bba7f4863a4a80764a869855f2085.1701143925.git.daniel@makrotopia.org


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