uncrypt: allow /data/local/tmp on userdebug/eng

Per https://android-review.googlesource.com/82814 , uncrypt
needs to be able to read shell_data_files on userdebug / eng
builds. Allow it.

Bug: 13083922
Change-Id: I72299673bb5e36be79413227105b5cad006d504f

uncrypt.te

@@ -10,6 +10,11 @@ allow uncrypt self:capability dac_override;
 # Read OTA zip file from /data/data/com.google.android.gsf/app_download
 r_dir_file(uncrypt, app_data_file)
 
+userdebug_or_eng(`
+  # For debugging, allow /data/local/tmp access
+  r_dir_file(uncrypt, shell_data_file)
+')
+
 # Create tmp file /cache/recovery/command.tmp
 # Read /cache/recovery/command
 # Rename /cache/recovery/command.tmp to /cache/recovery/command