Update bindings.cpp
Update bindings.cpp

Setup attribute reporting for _Fan Speed_ attribute 0x0000 of _Fan Control_ cluster 0x0202.  See #932.

dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin