ramips: mt7621: TP-Link EAP235/615-Wall: add poe passthrough gpio definitions

Add the missing definitions for the PoE passthrough functionality.
The relevant pin is already being exported, but it is missing from
the initial board configuration file. With this change, the user is
now able to toggle the PoE passthorough functionality via the uci cli

Signed-off-by: André Fonseca <[email protected]>

target/linux/ramips/mt7621/base-files/etc/board.d/03_gpio_switches

@@ -12,6 +12,10 @@ mikrotik,routerboard-760igs)
 telco-electronics,x1)
 	ucidef_add_gpio_switch "modem_reset" "Modem Reset" "496"
 	;;
+tplink,eap235-wall-v1|\
+tplink,eap615-wall-v1)
+	ucidef_add_gpio_switch "poe_passthrough" "PoE Passthrough" "poe-passthrough"
+	;;
 ubnt,edgerouter-x)
 	ucidef_add_gpio_switch "poe_passthrough" "PoE Passthrough" "480"
 	;;