Allow codecs access to gpu_device

Bug: 132837730
Test: atest android.media.cts.DecoderTest
Change-Id: Ia29867e8d16139230d9ffb408b3501883749fbb5
diff --git a/sepolicy/mediaswcodec.te b/sepolicy/mediaswcodec.te
new file mode 100644
index 0000000..3690750
--- /dev/null
+++ b/sepolicy/mediaswcodec.te
@@ -0,0 +1,2 @@
+allow mediaswcodec gpu_device:chr_file { ioctl open read write };
+