sepolicy: /dev/dri/* access to mediaserver for video playback am: c717c467fb am: dfd8a5385a

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/1345438

Change-Id: Icfbe778da4764871b4c5e824627c9ce4795de658
diff --git a/sepolicy/mediaserver.te b/sepolicy/mediaserver.te
new file mode 100644
index 0000000..922af2c
--- /dev/null
+++ b/sepolicy/mediaserver.te
@@ -0,0 +1 @@
+gpu_access(mediaserver)