Add SELinux policies for remote_key_provisioning_native namespace.

We need to separate out the feature flags in use by remote key
provisioning daemon (RKPD). For this, I have set up a new namespace
remote_key_provisioning_native. This change adds the SELinux policies to
make sure appropriate permissions are present when accessing the feature
flag for read/write.

Change-Id: I9e73a623f847a058b6236dd0aa370a7f9a9e6da7
Test: TreeHugger
diff --git a/private/rkpd.te b/private/rkpd.te
index d75638a..45e3e8d 100644
--- a/private/rkpd.te
+++ b/private/rkpd.te
@@ -12,4 +12,4 @@
 add_service(rkpd, rkpd_registrar_service)
 add_service(rkpd, rkpd_refresh_service)
 
-
+get_prop(rkpd, device_config_remote_key_provisioning_native_prop)