Add permissions for new netd AIDL HAL

Netd is now serving an AIDL HAL to replace the old HIDL HAL.

Bug: 205764585
Test: Boot and check for avc denials
Change-Id: I1ca5ed4ff3b79f082ea2f6d3e81f60a64ca04855
diff --git a/private/service_contexts b/private/service_contexts
index 247f22f..5049f25 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -70,6 +70,7 @@
 android.frameworks.stats.IStats/default                              u:object_r:fwk_stats_service:s0
 android.se.omapi.ISecureElementService/default                       u:object_r:secure_element_service:s0
 android.system.keystore2.IKeystoreService/default                    u:object_r:keystore_service:s0
+android.system.net.netd.INetd/default                                u:object_r:system_net_netd_service:s0
 android.system.suspend.ISystemSuspend/default                        u:object_r:hal_system_suspend_service:s0
 
 accessibility                             u:object_r:accessibility_service:s0