Update __init__.py (#48659)

This change solves that HMIP-RCV-1 is not found when used in a service call to invoke a virtual key (case-sensitivity problem).
- https://community.home-assistant.io/t/homematic-hmip-rcv-50-not-working-with-virtual-key-any-more/249000
- https://github.com/danielperna84/pyhomematic/issues/368

homeassistant/components/homematic/__init__.py

@@ -611,6 +611,8 @@ def _device_from_servicecall(hass, service):
     interface = service.data.get(ATTR_INTERFACE)
     if address == "BIDCOS-RF":
         address = "BidCoS-RF"
+    if address == "HMIP-RCV-1":
+        address = "HmIP-RCV-1"
 
     if interface:
         return hass.data[DATA_HOMEMATIC].devices[interface].get(address)