Add upgrade note about removal of deprecated channels (openhab#1449)

Signed-off-by: Jacob Laursen <[email protected]>

distributions/openhab/src/main/resources/bin/update.lst

@@ -93,7 +93,9 @@ ALERT;Velux Binding: On window things the semantic category of the position chan
 ALERT;Xiaomi Wifi devices (Mi IO) Binding: Channel Type change for some yeelights. The brightness channels with the Number type now have the Dimmer type. This affects only nightlight and ambilight channels for some models.
 
 [4.0.0]
+ALERT;DanfossAirUnit Binding: The deprecated channel 'manual_fan_speed' has been removed. Please use channel 'manual_fan_step' introduced in 3.2.
 ALERT;Hue emulation: The uniqueid value has been changed to resolve discovery issues with Alexa. You may need to rediscover "devices" in all services that use the hue emulation (Amazon Echo, Logitech Harmony, etc).
+ALERT;Hunter Douglas (Luxaflex) PowerView Binding: Deprecated scene channels have been removed. Please use the scene channels introduced in 3.2 (in channel group 'scenes').
 
 [[PRE]]
 [2.2.0]