make fb_deferred_io_mkwrite() static

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Jaya Kumar <jayakumar.lkml@gmail.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/fb_defio.c

@@ -48,7 +48,7 @@ static struct page* fb_deferred_io_nopage(struct vm_area_struct *vma,
 }
 
 /* vm_ops->page_mkwrite handler */
-int fb_deferred_io_mkwrite(struct vm_area_struct *vma,
+static int fb_deferred_io_mkwrite(struct vm_area_struct *vma,
 				  struct page *page)
 {
 	struct fb_info *info = vma->vm_private_data;