dt-bindings: arm: qcom: Document SM8350 SoC and boards

Document the SM8350 SoC binding and also the boards using it.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20210127123054.263231-2-vkoul@kernel.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -41,6 +41,7 @@ description: |
         sdm660
         sdm845
         sm8250
+        sm8350
 
   The 'board' element must be one of the following strings:
 
@@ -178,6 +179,11 @@ properties:
               - qcom,sm8250-mtp
           - const: qcom,sm8250
 
+      - items:
+          - enum:
+              - qcom,sm8350-mtp
+          - const: qcom,sm8350
+
 additionalProperties: true
 
 ...