arm64: dts: qcom: msm8996: use hdmi_phy for the MMCC's hdmipll clock

Link hdmi_phy as a clock provider of "hdmipll" clock to the MMCC.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221030161612.95471-1-dmitry.baryshkov@linaro.org