dt-bindings: arm: qcom: add missing SM8350 board compatibles

Document several board compatibles already present in Linux kernel.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220520123252.365762-9-krzysztof.kozlowski@linaro.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -631,8 +631,11 @@ properties:
 
       - items:
           - enum:
+              - microsoft,surface-duo2
               - qcom,sm8350-hdk
               - qcom,sm8350-mtp
+              - sony,pdx214-generic
+              - sony,pdx215-generic
           - const: qcom,sm8350
 
       - items: