arm64: dts: broadcom: bcmbca: bcm4908: add TP-Link C2300 USB LED triggers

This device has 2 USB LEDs meant to be triggered by devices in relevant
USB ports.

While at it fix typo in USB LED name.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Link: https://lore.kernel.org/all/20230228144520.21816-3-zajec5@gmail.com/


Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>