dma-buf/sync_file: de-stage sync_file headers

Move sync_file headers file to include/ dir.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/sync.h

@@ -20,8 +20,8 @@
 #include <linux/spinlock.h>
 #include <linux/fence.h>
 
-#include "sync_file.h"
-#include "uapi/sync_file.h"
+#include <linux/sync_file.h>
+#include <uapi/linux/sync_file.h>
 
 struct sync_timeline;
 

drivers/staging/android/sync_debug.c

@@ -26,7 +26,7 @@
 #include <linux/uaccess.h>
 #include <linux/anon_inodes.h>
 #include <linux/time64.h>
-#include "sync_file.h"
+#include <linux/sync_file.h>
 #include "sw_sync.h"
 
 #ifdef CONFIG_DEBUG_FS

drivers/staging/android/sync_file.c

@@ -23,8 +23,8 @@
 #include <linux/slab.h>
 #include <linux/uaccess.h>
 #include <linux/anon_inodes.h>
-#include "sync_file.h"
-#include "uapi/sync_file.h"
+#include <linux/sync_file.h>
+#include <uapi/linux/sync_file.h>
 
 static const struct file_operations sync_file_fops;