Add notification ID for no random mac support

Bug: 144172117
Test: atest FrameworksWifiTests
Change-Id: Iad7f21651bc20304fc3b8e108c04057c4bb51b2e
diff --git a/proto/src/system_messages.proto b/proto/src/system_messages.proto
index 5712566..068707f 100644
--- a/proto/src/system_messages.proto
+++ b/proto/src/system_messages.proto
@@ -234,6 +234,9 @@
     // Package: android
     NOTE_SERIAL_CONSOLE_ENABLED = 55;
 
+    // Inform the user that the current network may not support using a randomized MAC address.
+    NOTE_NETWORK_NO_MAC_RANDOMIZATION_SUPPORT = 56;
+
     // ADD_NEW_IDS_ABOVE_THIS_LINE
     // Legacy IDs with arbitrary values appear below
     // Legacy IDs existed as stable non-conflicting constants prior to the O release