Enforce MAC address restrictions for priv apps.

Bug: 230733237
Test: atest NetlinkSocketTest NetworkInterfaceTest
  bionic-unit-tests-static CtsSelinuxTargetSdkCurrentTestCases
  CtsSelinuxTargetSdk29TestCases CtsSelinuxTargetSdk27TestCases
Change-Id: I1d66ae7849e950612f3b6693216ec8c84e942640
diff --git a/private/app_neverallows.te b/private/app_neverallows.te
index 304f5a2..f716367 100644
--- a/private/app_neverallows.te
+++ b/private/app_neverallows.te
@@ -127,6 +127,7 @@
 
 # Disallow sending RTM_GETLINK messages on netlink sockets.
 neverallow all_untrusted_apps domain:netlink_route_socket { bind nlmsg_readpriv };
+neverallow priv_app domain:netlink_route_socket { bind nlmsg_readpriv };
 
 # Disallow sending RTM_GETNEIGH{TBL} messages on netlink sockets.
 neverallow {