sepolicy: Clean up policy for N

Change-Id: I39ddec0f60a9995de13b82f09705d246d7e0f454
diff --git a/sepolicy/file.te b/sepolicy/file.te
index d7d6b42..dc8df1f 100644
--- a/sepolicy/file.te
+++ b/sepolicy/file.te
@@ -14,3 +14,8 @@
 
 # Knobs for LiveDisplay
 type livedisplay_sysfs, sysfs_type, file_type;
+
+# Filesystems
+type exfat, sdcard_type, fs_type, mlstrustedobject;
+type fuseblk, sdcard_type, fs_type, mlstrustedobject;
+type ntfs, sdcard_type, fs_type, mlstrustedobject;