sepolicy: update for exfat-fuse

Change-Id: I5226d22c8b23faffeb70f56483c45d1a4ec72039
diff --git a/sepolicy/twrp.te b/sepolicy/twrp.te
index 6f43dc2..2a5961f 100755
--- a/sepolicy/twrp.te
+++ b/sepolicy/twrp.te
@@ -7,6 +7,7 @@
   allow kernel unlabeled:file rw_file_perms;
   allow kernel tmpfs:file { read };
   allow kernel recovery:fd { use };
+  allow unlabeled unlabeled:filesystem associate;
   allow vendor_init rootfs:dir read;
   allow postinstall tmpfs:file { getattr read execute };
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