Create a base class for broadlink entities (#52132)

* Create a base class for broadlink entities

* Update homeassistant/components/broadlink/entity.py

Co-authored-by: Daniel Hjelseth Høyer <mail@dahoiv.net>

* Update homeassistant/components/broadlink/entity.py

* Update homeassistant/components/broadlink/entity.py

Co-authored-by: Daniel Hjelseth Høyer <mail@dahoiv.net>

* black, remove unused

Co-authored-by: Daniel Hjelseth Høyer <mail@dahoiv.net>

homeassistant/components/broadlink/entity.py

@@ -0,0 +1,32 @@
+"""Broadlink entities."""
+
+from homeassistant.helpers import device_registry as dr
+
+from .const import DOMAIN
+
+
+class BroadlinkEntity:
+    """Representation of a Broadlink entity."""
+
+    _attr_should_poll = False
+
+    def __init__(self, device):
+        """Initialize the device."""
+        self._device = device
+
+    @property
+    def available(self):
+        """Return True if the remote is available."""
+        return self._device.update_manager.available
+
+    @property
+    def device_info(self):
+        """Return device info."""
+        return {
+            "identifiers": {(DOMAIN, self._device.unique_id)},
+            "connections": {(dr.CONNECTION_NETWORK_MAC, self._device.mac_address)},
+            "manufacturer": self._device.api.manufacturer,
+            "model": self._device.api.model,
+            "name": self._device.name,
+            "sw_version": self._device.fw_version,
+        }