gatekeeperd: use more specific label for /data file

Use a more specific label for /data/misc/gatekeeper

Rearrange some other rules.

Change-Id: Ib634e52526cf31a8f0a0e6d12bbf0f69dff8f6b5
diff --git a/file_contexts b/file_contexts
index eef0fd3..e36a6c3 100644
--- a/file_contexts
+++ b/file_contexts
@@ -229,6 +229,7 @@
 /data/misc/bluedroid/\.a2dp_data u:object_r:bluetooth_socket:s0
 /data/misc/camera(/.*)?         u:object_r:camera_data_file:s0
 /data/misc/dhcp(/.*)?           u:object_r:dhcp_data_file:s0
+/data/misc/gatekeeper(/.*)?     u:object_r:gatekeeper_data_file:s0
 /data/misc/keychain(/.*)?       u:object_r:keychain_data_file:s0
 /data/misc/keystore(/.*)?       u:object_r:keystore_data_file:s0
 /data/misc/media(/.*)?          u:object_r:media_data_file:s0