dt-bindings: qcom: Document samsung,gt58 and gt510

gt58 and gt510 are Samsung Galaxy Tab A 8.0/9.7 (2015) tablets.
Document their compatibles.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230107141911.47229-2-nikita@trvn.ru