Fix power device classes for system bridge (#153201)

homeassistant/components/system_bridge/sensor.py

@@ -336,6 +336,7 @@ BASE_SENSOR_TYPES: tuple[SystemBridgeSensorEntityDescription, ...] = (
         key="power_usage",
         translation_key="power_usage",
         state_class=SensorStateClass.MEASUREMENT,
+        device_class=SensorDeviceClass.POWER,
         native_unit_of_measurement=UnitOfPower.WATT,
         suggested_display_precision=2,
         icon="mdi:power-plug",
@@ -577,7 +578,6 @@ async def async_setup_entry(
                         key=f"gpu_{gpu.id}_power_usage",
                         name=f"{gpu.name} power usage",
                         entity_registry_enabled_default=False,
-                        device_class=SensorDeviceClass.POWER,
                         state_class=SensorStateClass.MEASUREMENT,
                         native_unit_of_measurement=UnitOfPower.WATT,
                         value=lambda data, k=index: gpu_power_usage(data, k),