Fix/cleanup includes a bit

backend/backend.c

@@ -1,5 +1,4 @@
 #include <assert.h>
-#include <errno.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -12,7 +11,6 @@
 #include <wlr/config.h>
 #include <wlr/render/wlr_renderer.h>
 #include <wlr/util/log.h>
-#include "backend/multi.h"
 #include "types/wlr_output.h"
 #include "util/env.h"
 #include "util/time.h"

backend/drm/atomic.c

@@ -5,13 +5,11 @@
 #include <wlr/render/drm_syncobj.h>
 #include <wlr/util/box.h>
 #include <wlr/util/log.h>
-#include <xf86drm.h>
 #include <xf86drmMode.h>
 #include "backend/drm/drm.h"
 #include "backend/drm/fb.h"
 #include "backend/drm/iface.h"
 #include "backend/drm/util.h"
-#include "types/wlr_output.h"
 
 static char *atomic_commit_flags_str(uint32_t flags) {
 	const char *const l[] = {

backend/drm/backend.c

@@ -1,10 +1,8 @@
 #include <assert.h>
-#include <errno.h>
 #include <drm_fourcc.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
 #include <wayland-server-core.h>
 #include <wlr/backend/interface.h>
 #include <wlr/backend/session.h>

backend/drm/drm.c

@@ -1,7 +1,6 @@
 #include <assert.h>
 #include <drm_fourcc.h>
 #include <drm_mode.h>
-#include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
 #include <stdint.h>
@@ -25,9 +24,6 @@
 #include "backend/drm/fb.h"
 #include "backend/drm/iface.h"
 #include "backend/drm/util.h"
-#include "render/pixel_format.h"
-#include "render/drm_format_set.h"
-#include "render/wlr_renderer.h"
 #include "types/wlr_output.h"
 #include "util/env.h"
 #include "config.h"

backend/libinput/tablet_tool.c

@@ -6,6 +6,7 @@
 #include <wlr/interfaces/wlr_tablet_tool.h>
 #include <wlr/util/log.h>
 #include "backend/libinput.h"
+#include "config.h"
 
 struct tablet_tool {
 	struct wlr_tablet_tool wlr_tool;