hikey960: set selinux label for mali device node

This fixes the denial messages for surfaceflinger

Change-Id: Ib177417a64a6c6cec7a6f4ed818e0260c1a92e29
Signed-off-by: Vishal Bhoj <vishal.bhoj@linaro.org>
diff --git a/sepolicy/file_contexts b/sepolicy/file_contexts
index 6d91f79..e92402b 100644
--- a/sepolicy/file_contexts
+++ b/sepolicy/file_contexts
@@ -3,6 +3,7 @@
 /dev/ttyAMA5           u:object_r:console_device:s0
 /dev/ttyFIQ0           u:object_r:console_device:s0
 /dev/mali              u:object_r:gpu_device:s0
+/dev/mali0             u:object_r:gpu_device:s0
 /dev/dri/card0         u:object_r:gpu_device:s0
 /dev/hci_tty           u:object_r:hci_attach_dev:s0
 /dev/ttyAMA1           u:object_r:hci_attach_dev:s0