rename layout init

sway/main.c

@@ -382,7 +382,7 @@ int main(int argc, char **argv) {
 
 	wlr_log(L_INFO, "Starting sway version " SWAY_VERSION);
 
-	init_layout();
+	layout_init();
 
 	if (!server_init(&server)) {
 		return 1;

sway/tree/layout.c

@@ -43,7 +43,7 @@ static void output_layout_change_notify(struct wl_listener *listener, void *data
 	container_arrange_windows(&root_container, -1, -1);
 }
 
-void init_layout(void) {
+void layout_init(void) {
 	root_container.id = 0; // normally assigned in new_swayc()
 	root_container.type = C_ROOT;
 	root_container.layout = L_NONE;