arm64: dts: qcom: sm8150: make dispcc cast minimal vote on MMCX

Add required-opps property to the display clock controller. This makes
it cast minimal vote on the MMCX lane and prevents further 'clock stuck'
errors when enabling the display.

Fixes: 2ef3bb17 ("arm64: dts: qcom: sm8150: Add DISPCC node")
Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20231215174152.315403-2-dmitry.baryshkov@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sm8150.dtsi

@@ -3914,6 +3914,7 @@ dispcc: clock-controller@af00000 {
 				      "dp_phy_pll_link_clk",
 				      "dp_phy_pll_vco_div_clk";
 			power-domains = <&rpmhpd SM8150_MMCX>;
+			required-opps = <&rpmhpd_opp_low_svs>;
 			#clock-cells = <1>;
 			#reset-cells = <1>;
 			#power-domain-cells = <1>;