dt-bindings: Add Kingnovel vendor prefix

Their domain name is spelled kingnoval, but textually Kingnovel.

Cc: ada@kingnoval.com
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -165,6 +165,7 @@ keithkoep	Keith & Koep GmbH
 keymile	Keymile GmbH
 khadas	Khadas
 kinetic Kinetic Technologies
+kingnovel	Kingnovel Technology Co., Ltd.
 kosagi	Sutajio Ko-Usagi PTE Ltd.
 kyo	Kyocera Corporation
 lacie	LaCie