Allow rild to create, bind, read, write to itself through a netlink socket.

Change-Id: Ia7457e3fd4f1100bbee821f412e80ba17fede5ec

rild.te

@@ -38,3 +38,6 @@ allow rild radio_prop:property_service set;
 allow rild gps_device:chr_file rw_file_perms;
 
 allow rild tty_device:chr_file rw_file_perms;
+
+# Allow rild to create, bind, read, write to itself through a netlink socket
+allow rild self:netlink_socket { create bind read write };