cm: SELinux policy for persistent properties API

 * Set up persistent properties for devices with a /persist partition.

Change-Id: I78974dd4e25831338462c91fc25e36e343795510
diff --git a/prebuilt/common/etc/init.local.rc b/prebuilt/common/etc/init.local.rc
index da6273e..483864a 100644
--- a/prebuilt/common/etc/init.local.rc
+++ b/prebuilt/common/etc/init.local.rc
@@ -104,6 +104,9 @@
     setprop net.tcp.usercfg.wifi       1
     setprop net.tcp.usercfg.lte        1
 
+    # Persistent properties (only created if persist exists)
+    mkdir /persist/properties 0770 system system
+
 # adb over network
 on property:service.adb.tcp.port=5555
     stop adbd