dt-bindings: arm: qcom: Document sa8540p, sc8180x and sc8280xp

Add compatibles for the sa8540p automotive, as well as sc8180x and
sc8280xp compute platforms. Also add compatibles for the ADP devboard,
the Lenovo Flex 5G, Microsoft Surface Pro X and the sc8280xp QRD.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220225035415.2294821-1-bjorn.andersson@linaro.org