dt-bindings: arm: qcom: Document sdm632 and fairphone,fp3 board

Add binding documentation for Fairphone 3 smartphone which is based on
Snapdragon 632 (sm632).

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220220201909.445468-10-luca@z3ntu.xyz

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -42,6 +42,7 @@ description: |
         sc7180
         sc7280
         sdm630
+        sdm632
         sdm660
         sdm845
         sdx55
@@ -225,6 +226,11 @@ properties:
               - google,senor
           - const: qcom,sc7280
 
+      - items:
+          - enum:
+              - fairphone,fp3
+          - const: qcom,sdm632
+
       - items:
           - enum:
               - xiaomi,lavender