Add /data/security path for mac_permissions.xml.

/data/security is now the preferred location for updated policy files.
Add it for mac_permissions.xml.
Separate change will remove the old /data/system location.

Change-Id: I2774661e84c858c9b698ec60e224bbbcdac732f3
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

services/java/com/android/server/pm/SELinuxMMAC.java

@@ -57,6 +57,7 @@ public final class SELinuxMMAC {
 
     // Locations of potential install policy files.
     private static final File[] INSTALL_POLICY_FILE = {
+        new File(Environment.getDataDirectory(), "security/mac_permissions.xml"),
         new File(Environment.getDataDirectory(), "system/mac_permissions.xml"),
         new File(Environment.getRootDirectory(), "etc/security/mac_permissions.xml"),
         null};