devicetree: Add vendor prefix for Shenzhen Sunchip Technology Co., Ltd

Shenzhen Sunchip Technology Co., Ltd produces TV boxes and TV dongles,
some of which are sold under other brands. Website:
<URL:http://www.sunchip-tech.com/

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Signed-off-by: Rask Ingemann Lambertsen <ccc94453@vip.cybercity.dk>
Signed-off-by: Rob Herring <robh@kernel.org>