dt-bindings: Add vendor prefix for WinLink

WinLink Co., Ltd is a hardware design and manufacturing company based in
South Korea. Official web-site: [1].

[1] http://win-link.net/



Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211217161549.24836-4-semen.protsenko@linaro.org


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>