filogic: add missing 2.5G PHY LEDs configuration for Zyxel EX5700

filogic: add missing 2.5G PHY LEDs configuration for Zyxel EX5700

configure 2.5G PHY LEDs to:

2500/1000: green with blink on TX/RX
100/10: green+yellow with blink on TX/RX

which is similar to other 1G PHY LEDs, which are:

1000: green with blink on TX/RX
100/10: green+yellow with blink on TX/RX

Fixes: 6cc14bf66aa ("filogic: support Telenor branded ZyXEL EX5700")
Signed-off-by: Yan Cangang <nalanzeyu@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/16082
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>