dt-bindings: clock: qcom,mmcc: Add GPLL0_DIV for MSM8998

We've not been consuming that clock for no apparent reason. Describe it.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230622-topic-8998clk-v2-2-6222fbc2916b@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

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

@@ -297,6 +297,7 @@ allOf:
             - description: HDMI phy PLL clock
             - description: DisplayPort phy PLL link clock
             - description: DisplayPort phy PLL vco clock
+            - description: Global PLL 0 DIV clock
 
         clock-names:
           items:
@@ -309,6 +310,7 @@ allOf:
             - const: hdmipll
             - const: dplink
             - const: dpvco
+            - const: gpll0_div
 
   - if:
       properties: