ramips: fix D-Link DIR-615 H1 switch port mapping

Reuse a device-specific switch port mapping which also applies to the
D-Link DIR-615 H1.

Signed-off-by: Mirko Parthey <mirko.parthey@web.de>

target/linux/ramips/base-files/etc/board.d/02_network

@@ -33,6 +33,7 @@ ramips_setup_interfaces()
 	case $board in
 	11acnas|\
 	d-team,newifi-d2|\
+	dir-615-h1|\
 	w2914nsv2|\
 	zbt-we2026)
 		ucidef_add_switch "switch0" \