sepolicy: Allow media_rw write to fix camcorder denials

Change-Id: Icc892d8b2c34950431564738b66d8e8baefc62be
diff --git a/sepolicy/mediaserver.te b/sepolicy/mediaserver.te
new file mode 100644
index 0000000..829210c
--- /dev/null
+++ b/sepolicy/mediaserver.te
@@ -0,0 +1,2 @@
+# For camera
+allow mediaserver media_rw_data_file:file write;