Grant GPU access to mediacodec

... which will be needed for Cuttlefish with Minigbm
Gralloc 4.

Bug: b/146515640
Test: cts -m CtsCameraTestCases
Change-Id: I3f66d4acdbe04c93be6b033974ee9606827a6a8f
diff --git a/shared/sepolicy/vendor/mediacodec.te b/shared/sepolicy/vendor/mediacodec.te
index e26f128..dcb0a03 100644
--- a/shared/sepolicy/vendor/mediacodec.te
+++ b/shared/sepolicy/vendor/mediacodec.te
@@ -1 +1,3 @@
 allow mediacodec system_file:dir r_dir_perms;
+
+gpu_access(mediacodec)