ARM: dts: qcom: apq8064: add second DSI host and PHY

Add second DSI host and PHY available on the APQ8064 platform.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230121091237.2734272-1-dmitry.baryshkov@linaro.org