omni: sepolicy: fixup extended fs rules

for ntfs and exfat

Change-Id: I5d22e83958a3a731799b7fe6c7f0c119128ddc0b
diff --git a/sepolicy/fsck_untrusted.te b/sepolicy/fsck_untrusted.te
index d835967..0981fb2 100644
--- a/sepolicy/fsck_untrusted.te
+++ b/sepolicy/fsck_untrusted.te
@@ -7,4 +7,7 @@
 allow fsck_untrusted mnt_media_rw_file:file rw_file_perms;
 allow fsck_untrusted fuse_device:chr_file { read write open getattr };
 allow fsck_untrusted fuse_device:filesystem mount;
+allow fsck_untrusted block_device:dir getattr;
+allow fsck_untrusted media_rw_data_file:dir { search getattr };
+allow fsck_untrusted tmpfs:dir { search };