Add support for Thread Integration to Display Icons for IKEA TBRs (home-assistant#155299)

Author: wardmatter

homeassistant/components/thread/discovery.py

@@ -32,6 +32,7 @@
     "Google Inc.": "google",
     "HomeAssistant": "homeassistant",
     "Home Assistant": "homeassistant",
+    "IKEA": "ikea",
     "Nanoleaf": "nanoleaf",
     "OpenThread": "openthread",
     "Samsung": "samsung",