render/swapchain: make public

We've had this struct for a while. It'd be useful for compositors
if they want to manage the swap chains themselves instead of being
forced to use wlr_output's. Some compositors might also want to use
a swapchain without an output.

types/output/cursor.c

@@ -2,12 +2,12 @@
 #include <drm_fourcc.h>
 #include <stdlib.h>
 #include <wlr/interfaces/wlr_output.h>
+#include <wlr/render/swapchain.h>
 #include <wlr/render/wlr_renderer.h>
 #include <wlr/types/wlr_compositor.h>
 #include <wlr/types/wlr_matrix.h>
 #include <wlr/util/log.h>
 #include "render/allocator/allocator.h"
-#include "render/swapchain.h"
 #include "types/wlr_buffer.h"
 #include "types/wlr_output.h"
 

types/output/output.c

@@ -4,12 +4,12 @@
 #include <drm_fourcc.h>
 #include <stdlib.h>
 #include <wlr/interfaces/wlr_output.h>
+#include <wlr/render/swapchain.h>
 #include <wlr/types/wlr_compositor.h>
 #include <wlr/types/wlr_matrix.h>
 #include <wlr/types/wlr_output_layer.h>
 #include <wlr/util/log.h>
 #include "render/allocator/allocator.h"
-#include "render/swapchain.h"
 #include "types/wlr_output.h"
 #include "util/env.h"
 #include "util/global.h"

types/output/render.c

@@ -3,12 +3,12 @@
 #include <stdlib.h>
 #include <wlr/interfaces/wlr_output.h>
 #include <wlr/render/interface.h>
+#include <wlr/render/swapchain.h>
 #include <wlr/util/log.h>
 #include <xf86drm.h>
 #include "backend/backend.h"
 #include "render/allocator/allocator.h"
 #include "render/drm_format_set.h"
-#include "render/swapchain.h"
 #include "render/wlr_renderer.h"
 #include "render/pixel_format.h"
 #include "types/wlr_output.h"