dt-bindings: arm: samsung: document g0s board binding

Add binding for the Samsung Galaxy S22+ (SM-S906B) board, codenamed G0S,
which is based on the Samsung Exynos2200 SoC.

Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250504145907.1728721-2-ivo.ivanov.ivanov1@gmail.com


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>