arm64: dts: qcom: sm8350: Add SDHCI2

Add and configure the SDHCI host responsible for (mostly) SD Card and
its corresponding pins' sleep states.

The setup is *literally* 1:1 with 8450 (bar SDR50/104 may not be
broken).

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221116123612.34302-2-konrad.dybcio@linaro.org