dt-bindings: clock: Introduce RPMHCC bindings for SC7180

Add compatible for SC7180 RPMHCC.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lkml.kernel.org/r/1572371299-16774-3-git-send-email-tdas@codeaurora.org
[sboyd@kernel.org: Sort compatible list]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Documentation/devicetree/bindings/clock/qcom,rpmhcc.yaml

@@ -17,6 +17,7 @@ description: |
 properties:
   compatible:
     enum:
+      - qcom,sc7180-rpmh-clk
       - qcom,sdm845-rpmh-clk
       - qcom,sm8150-rpmh-clk