drm: misc cleanup

This patch contains the following cleanups:
- make needlessly global functions static
- remove the following unused global functions:
 - drm_fops.c: drm_read
 - i915_dma.c: i915_do_cleanup_pageflip

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/drm_proc.c b/drivers/char/drm/drm_proc.c
index 6e06e8c..4774087 100644
--- a/drivers/char/drm/drm_proc.c
+++ b/drivers/char/drm/drm_proc.c
@@ -57,7 +57,7 @@
 /**
  * Proc file list.
  */
-struct drm_proc_list {
+static struct drm_proc_list {
 	const char *name;	/**< file name */
 	int	   (*f)(char *, char **, off_t, int, int *, void *);	/**< proc callback*/
 } drm_proc_list[] = {