ivi-shell: Add missing '\n' in weston_log function usage

Signed-off-by: Chris Michael <cp.michael@samsung.com>
diff --git a/ivi-shell/hmi-controller.c b/ivi-shell/hmi-controller.c
index c388164..5cc76d3 100644
--- a/ivi-shell/hmi-controller.c
+++ b/ivi-shell/hmi-controller.c
@@ -1780,7 +1780,7 @@
 	struct wl_event_loop *loop = NULL;
 
 	if (interface_version < sizeof(struct ivi_controller_interface)) {
-		weston_log("ivi-shell: version mismatch of controller interface");
+		weston_log("ivi-shell: version mismatch of controller interface\n");
 		return -1;
 	}