arm64: dts: qcom: sm8450: Additionally manage MXC power domain in videocc

arm64: dts: qcom: sm8450: Additionally manage MXC power domain in videocc

Videocc requires both MMCX and MXC rails to be powered ON to configure
the video PLLs on SM8450 platform. Hence add MXC power domain to videocc
node on SM8450.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Jagadeesh Kona <quic_jkona@quicinc.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250822-topic-sm8x50-upstream-pll-multi-pd-voting-dt-v2-1-28f35728a146@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>