ramips: fix syntax error in board.d/01_leds

Fixes the following error:

  syntax error: unexpected newline (expecting ")")

Fixes: FS#739

Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/ramips/base-files/etc/board.d/01_leds

@@ -290,7 +290,7 @@ pbr-m1)
 psg1208)
 	set_wifi_led "$board:white:wlan2g"
 	;;
-psg1218a\|
+psg1218a|\
 psg1218b)
 	ucidef_set_led_netdev "Network" "Network" "$board:blue:status" "eth0"
 	ucidef_set_led_default "status" "STATUS" "$board:yellow:status" "0"