arm64: dts: qcom: sm8350-sagami: Wire up SDHCI2

Adjust regulators, add required pin setup and finally enable SDHCI2
to get the SD Card slot going on Sagami Xperias.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221116123612.34302-4-konrad.dybcio@linaro.org