RSSI_PEER and RSSI_DEVICE are different things (fixes #20900) (#20902)

* Fix #20900: RSSI_PEER and RSSI_DEVICE are different things

This change is fixing issue #20900.

Wireless actors are having two RSSI values. The way the component was programmed one of them was overwritten.

* Added deprecation comment

* Fixed long line

* Fix: pylint comment

* Lint

* flake8

* flake8 again

* Update __init__.py

homeassistant/components/homematic/__init__.py

@@ -107,8 +107,8 @@ HM_ATTRIBUTE_SUPPORT = {
     'ERROR': ['sabotage', {0: 'No', 1: 'Yes'}],
     'ERROR_SABOTAGE': ['sabotage', {0: 'No', 1: 'Yes'}],
     'SABOTAGE': ['sabotage', {0: 'No', 1: 'Yes'}],
-    'RSSI_PEER': ['rssi', {}],
-    'RSSI_DEVICE': ['rssi', {}],
+    'RSSI_PEER': ['rssi_peer', {}],
+    'RSSI_DEVICE': ['rssi_device', {}],
     'VALVE_STATE': ['valve', {}],
     'LEVEL': ['level', {}],
     'BATTERY_STATE': ['battery', {}],