[ESP32] Implement GetSupportedWiFiBandsMask() API (#31437)

Author: shubhamdp

src/platform/ESP32/NetworkCommissioningDriver.cpp

@@ -433,6 +433,12 @@ void ESPWiFiDriver::ScanNetworks(ByteSpan ssid, WiFiDriver::ScanCallback * callb
     }
 }
 
+uint32_t ESPWiFiDriver::GetSupportedWiFiBandsMask() const
+{
+    uint32_t bands = static_cast<uint32_t>(1UL << chip::to_underlying(WiFiBandEnum::k2g4));
+    return bands;
+}
+
 CHIP_ERROR ESPWiFiDriver::SetLastDisconnectReason(const ChipDeviceEvent * event)
 {
     VerifyOrReturnError(event->Type == DeviceEventType::kESPSystemEvent && event->Platform.ESPSystemEvent.Base == WIFI_EVENT &&

src/platform/ESP32/NetworkCommissioningDriver.h

@@ -112,6 +112,7 @@ class ESPWiFiDriver final : public WiFiDriver
     Status AddOrUpdateNetwork(ByteSpan ssid, ByteSpan credentials, MutableCharSpan & outDebugText,
                               uint8_t & outNetworkIndex) override;
     void ScanNetworks(ByteSpan ssid, ScanCallback * callback) override;
+    uint32_t GetSupportedWiFiBandsMask() const override;
 
     CHIP_ERROR ConnectWiFiNetwork(const char * ssid, uint8_t ssidLen, const char * key, uint8_t keyLen);
     void OnConnectWiFiNetwork();