sepolicy: Split off /cache/recovery's permissions

/cache/recovery is used by 2 domains: recovery and updater apps. Separate
its perms from the rest of /cache and grant them to those 2 clients

Change-Id: Iacde60744c07423f9876c2f8e3da900543e38ddf
diff --git a/sepolicy/recovery.te b/sepolicy/recovery.te
index af76917..4446bba 100644
--- a/sepolicy/recovery.te
+++ b/sepolicy/recovery.te
@@ -35,4 +35,8 @@
 allow recovery install_data_file:file create_file_perms;
 allow recovery system_data_file:file create;
 
+# /cache/recovery things: command and logs
+allow recovery recovery_cache_file:dir create_dir_perms;
+allow recovery recovery_cache_file:file create_file_perms;
+
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