qualcommax: dl-wrx36: fix 2.5G port LED-s

qualcommax: dl-wrx36: fix 2.5G port LED-s

Currently, 2.5G port LED-s on Dynalink are incorrectly configured and thus
they will light up all of the time.

So, lets fix this by:
1. Current green LED is actually yellow, change the color
2. Fix its polarity as its actually active-low
3. The yellow LED that was registered as being connected to LED_1 pin on
the PHY is not actually connected at all, so remove it.
4. The actual green LED is connected to LED_2 on the PHY so add it.

Fixes: 75ad5c24142a ("qualcommax: switch to qca8081 upstream PHY driver")
Fixes: #14502
Link: https://github.com/openwrt/openwrt/pull/17656
Signed-off-by: Robert Marko <robimarko@gmail.com>