Wifi: Add Implementation for low-latency modes API

This commit adds default implementation for the new API for low-latency
modes in IWifiChip@1.3

Bug: 34905427
Test: Unit test
Test: ./hardware/interfaces/wifi/1.3/default/tests/runtests.sh
Test: VTS test
Test: run vts -m VtsHalWifiV1_3TargetTest

Change-Id: I7109fbad75c0e5adf89edb47f5614a636c65d68f
diff --git a/wifi/1.3/default/wifi_legacy_hal.h b/wifi/1.3/default/wifi_legacy_hal.h
index af654fa..2f513c4 100644
--- a/wifi/1.3/default/wifi_legacy_hal.h
+++ b/wifi/1.3/default/wifi_legacy_hal.h
@@ -254,6 +254,8 @@
     wifi_error selectTxPowerScenario(const std::string& iface_name,
                                      wifi_power_scenario scenario);
     wifi_error resetTxPowerScenario(const std::string& iface_name);
+    wifi_error setLatencyMode(const std::string& iface_name,
+                              wifi_latency_mode mode);
     // Logger/debug functions.
     std::pair<wifi_error, uint32_t> getLoggerSupportedFeatureSet(
         const std::string& iface_name);