Allow userdata_exp partitions

Bug: 336319772
Change-Id: I7f878f29d356df3992fb49b9df8f8a900a6f12b8
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
diff --git a/storage/sepolicy/file_contexts b/storage/sepolicy/file_contexts
index ecca954..ff863db 100644
--- a/storage/sepolicy/file_contexts
+++ b/storage/sepolicy/file_contexts
@@ -3,3 +3,4 @@
 /dev/sg[0-9]                       u:object_r:sg_device:s0
 /data/vendor/storage(/.*)?         u:object_r:dump_storage_data_file:s0
 /vendor/bin/sg_read_buffer         u:object_r:sg_util_exec:s0
+/dev/block/by-name/userdata_exp.*  u:object_r:userdata_exp_block_device:s0