dt-bindings: vendor-prefixes: add chargebyte

chargebyte supplies hardware and software products for all
aspects of charging communication.
https://chargebyte.com/



Signed-off-by: Stefan Wahren <stefan.wahren@chargebyte.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>