dt-bindings: arm: qcom: Add SM8350 HDK

Document the SM8350 Hardware Development Kit (HDK).
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Reported-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210310035710.2816699-1-bjorn.andersson@linaro.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -204,6 +204,7 @@ properties:
 
       - items:
           - enum:
+              - qcom,sm8350-hdk
               - qcom,sm8350-mtp
           - const: qcom,sm8350