dt-bindings: Add Oxford Semiconductor to vendor prefixes

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -177,6 +177,7 @@ option	Option NV
 ortustech	Ortus Technology Co., Ltd.
 ovti	OmniVision Technologies
 ORCL	Oracle Corporation
+oxsemi	Oxford Semiconductor, Ltd.
 panasonic	Panasonic Corporation
 parade	Parade Technologies Inc.
 pericom	Pericom Technology Inc.