[libdrm] fix perms on control node in udev rule

[Dave Airlie]

commit de4967b8bc6e0682a65f852beee03e8264ef5516
Author: Dave Airlie <airlied at redhat.com>
Date:   Fri Oct 21 15:18:19 2011 +0100

    fix perms on control node in udev rule

 91-drm-modeset.rules |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/91-drm-modeset.rules b/91-drm-modeset.rules
index 789c9f4..650acc3 100644
--- a/91-drm-modeset.rules
+++ b/91-drm-modeset.rules
@@ -1 +1 @@
-KERNEL=="controlD[0-9]*",	NAME="dri/%k", MODE="0666"
+KERNEL=="controlD[0-9]*",	NAME="dri/%k", MODE="0600"