arm64: dts: qcom: msm8994-kitakami: Add uSD card support

Assign regulators and enable regulator-set-load on
VMMC so as to provide sufficient power.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210118162432.107275-7-konrad.dybcio@somainline.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>