[AWARE] Add legacy code wrapper for NDP channel indication

Integrate legacy HAL code mods to add an NDP channel indication.

Note: This CL is just the integration - not the HIDL usage of the
new API.

Bug: 37007030
Test: builds + integration tests passing
Change-Id: I59da1fb7e225a5038e436b793bc66b892786c238
diff --git a/wifi/1.2/default/wifi_legacy_hal.h b/wifi/1.2/default/wifi_legacy_hal.h
index 193928b..05f700e 100644
--- a/wifi/1.2/default/wifi_legacy_hal.h
+++ b/wifi/1.2/default/wifi_legacy_hal.h
@@ -100,6 +100,7 @@
         on_event_transmit_follow_up;
     std::function<void(const NanRangeRequestInd&)> on_event_range_request;
     std::function<void(const NanRangeReportInd&)> on_event_range_report;
+    std::function<void(const NanDataPathScheduleUpdateInd&)> on_event_schedule_update;
 };
 
 // Full scan results contain IE info and are hence passed by reference, to