dt-bindings: add Kontron vendor prefix

Kontron is a leading embedded computer supplier. More information can be
found on: https://www.kontron.de/

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index e0a3e5f..52e8425 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -479,6 +479,8 @@
     description: Rakuten Kobo Inc.
   "^koe,.*":
     description: Kaohsiung Opto-Electronics Inc.
+  "^kontron,.*":
+    description: Kontron S&T AG
   "^kosagi,.*":
     description: Sutajio Ko-Usagi PTE Ltd.
   "^kyo,.*":