wifi: Add support for multiple radio stats

Previously, we've always assumed that we have only one instance of
radio stats fetched in link layer stats. This is no longer true for the
newer devices which support multiple radios.

Also,
Changed the timestamp member from uint32_t to uint64_t.

Bug: 36148086
Test: The error logs no longer seen on newer devices.
Change-Id: I048a1db7cc0bfb0dc0dacafff2156f42a8ae1e63
diff --git a/wifi/1.0/default/hidl_struct_util.cpp b/wifi/1.0/default/hidl_struct_util.cpp
index a89f8c0..fb93c5a 100644
--- a/wifi/1.0/default/hidl_struct_util.cpp
+++ b/wifi/1.0/default/hidl_struct_util.cpp
@@ -706,11 +706,17 @@
   hidl_stats->iface.wmeVoPktStats.retries =
       legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries;
   // radio legacy_stats conversion.
-  hidl_stats->radio.onTimeInMs = legacy_stats.radio.on_time;
-  hidl_stats->radio.txTimeInMs = legacy_stats.radio.tx_time;
-  hidl_stats->radio.rxTimeInMs = legacy_stats.radio.rx_time;
-  hidl_stats->radio.onTimeInMsForScan = legacy_stats.radio.on_time_scan;
-  hidl_stats->radio.txTimeInMsPerLevel = legacy_stats.radio_tx_time_per_levels;
+  std::vector<StaLinkLayerRadioStats> hidl_radios_stats;
+  for (const auto& legacy_radio_stats : legacy_stats.radios) {
+    StaLinkLayerRadioStats hidl_radio_stats;
+    hidl_radio_stats.onTimeInMs = legacy_radio_stats.stats.on_time;
+    hidl_radio_stats.txTimeInMs = legacy_radio_stats.stats.tx_time;
+    hidl_radio_stats.rxTimeInMs = legacy_radio_stats.stats.rx_time;
+    hidl_radio_stats.onTimeInMsForScan = legacy_radio_stats.stats.on_time_scan;
+    hidl_radio_stats.txTimeInMsPerLevel = legacy_radio_stats.tx_time_per_levels;
+    hidl_radios_stats.push_back(hidl_radio_stats);
+  }
+  hidl_stats->radios = hidl_radios_stats;
   // Timestamp in the HAL wrapper here since it's not provided in the legacy
   // HAL API.
   hidl_stats->timeStampInMs = uptimeMillis();