swupdate: init script: add mongoose extra args variable

add a variable $SWUPDATE_MONGOOSE_EXTRA_ARGS to permit providing
additional parameters (such as for overriding the port) to
swupdate-mongoose.

Signed-off-by: Markus Klotzbuecher <markus.klotzbuecher@kistler.com>

recipes-support/swupdate/swupdate/swupdate

@@ -57,7 +57,7 @@ do_start() {
 	*)
 		echo "Starting $DESC ..."
 		cd /home/root
-		exec $DAEMON -v -w "-r /www" $SWUPDATE_EXTRA_ARGS &
+		exec $DAEMON -v -w "-r /www $SWUPDATE_MONGOOSE_EXTRA_ARGS" $SWUPDATE_EXTRA_ARGS &
 		exit 0
 		;;
 	esac