ar71xx: assign proper GPIO pin for Ubiquiti Nanostation models

The GPIO pins for "POE passthrough" of Ubiquiti Nanostation models are the
following:
* Ubiquiti Nanostation M XM: Pin 8
* Ubiquiti Nanostation M XW: Pin 2

The previous definition of the pins was mixed up between XM and XW model.

Signed-off-by: Lars Kruse <[email protected]>

SVN-Revision: 46922

target/linux/ar71xx/base-files/etc/uci-defaults/01_gpio-switches

@@ -10,10 +10,10 @@ board=$(ar71xx_board_name)
 
 case "$board" in
 nanostation-m)
-	ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "2"
+	ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "8"
 	;;
 nanostation-m-xw)
-	ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "8"
+	ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "2"
 	;;
 cpe510)
 	ucidef_set_gpio_switch "poe_passthrough" "PoE Passthrough" "20"