drm: make drm_minors_cleanup() static

Make the needlessly global drm_minors_cleanup() static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 5641387..452c2d8 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -318,7 +318,7 @@
 		DRM_ERROR("Cannot unload module\n");
 }
 
-int drm_minors_cleanup(int id, void *ptr, void *data)
+static int drm_minors_cleanup(int id, void *ptr, void *data)
 {
 	struct drm_minor *minor = ptr;
 	struct drm_device *dev;