arm64: dts: qcom: x1e80100-qcp: Enable SD card support

One of the SD card slots found on the X Elite QCP board is
controlled by the SDC2.

Enable it and describe the board specific resources.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20241212-x1e80100-qcp-sdhc-v4-2-a74c48ee68a3@linaro.org


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