sepolicy: add vendor_init to clear avc denials

Change-Id: I12bb691c9796a7c2e4b755af8140cad150fa7b90
diff --git a/sepolicy/twrp.te b/sepolicy/twrp.te
index 7d700ce..67eb563 100755
--- a/sepolicy/twrp.te
+++ b/sepolicy/twrp.te
@@ -7,4 +7,5 @@
   allow kernel unlabeled:file rw_file_perms;
   allow kernel tmpfs:file { read };
   allow kernel recovery:fd { use };
+  allow vendor_init rootfs:dir read;
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