dt-bindings: Add Guangdong Neweast Optoelectronics CO. LTD vendor prefix

Add vendor prefix for Guangdong Neweast Optoelectronics CO. LTD

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20200226081011.1347245-4-anarsoul@gmail.com