max: Fix build

src/drivers/max/driver_fpga.c

@@ -202,7 +202,7 @@ static void init_device_context(unsigned devid)
 				char *colon = strstr(load->engine_id_pattern, ":*");
 				snprintf(s, sizeof(s), "%.*s:%u",
 						colon - load->engine_id_pattern,
-						load->engine_id_pattern
+						load->engine_id_pattern,
 						(unsigned) devid);
 			}
 			/* FIXME: this assumes that the loads are in-order.