Add SmartThingsAccelCluster to ZHA binary_sensor (#21609)

* Add SmartThingsAccelCluster to binary_sensor

* Make corrections per discussion with @dmulcahey

* Add missing const to gateway.py

* Remove Acceleration from no sensor

homeassistant/components/zha/binary_sensor.py

@@ -12,7 +12,7 @@ from .core.const import (
     DATA_ZHA, DATA_ZHA_DISPATCHERS, ZHA_DISCOVERY_NEW, ON_OFF_CHANNEL,
     LEVEL_CHANNEL, ZONE_CHANNEL, SIGNAL_ATTR_UPDATED, SIGNAL_MOVE_LEVEL,
     SIGNAL_SET_LEVEL, ATTRIBUTE_CHANNEL, UNKNOWN, OPENING, ZONE, OCCUPANCY,
-    ATTR_LEVEL, SENSOR_TYPE)
+    ATTR_LEVEL, SENSOR_TYPE, ACCELERATION)
 from .entity import ZhaEntity
 
 _LOGGER = logging.getLogger(__name__)
@@ -41,6 +41,7 @@ DEVICE_CLASS_REGISTRY = {
     OPENING: OPENING,
     ZONE: get_ias_device_class,
     OCCUPANCY: OCCUPANCY,
+    ACCELERATION: 'moving',
 }