ARM: dts: qcom: ipq4019: correct SDHCI XO clock

ARM: dts: qcom: ipq4019: correct SDHCI XO clock

Using GCC_DCD_XO_CLK as the XO clock for SDHCI controller is not correct,
it seems that I somehow made a mistake of passing it instead of the fixed
XO clock.

Fixes: 04b3b72b5b8f ("ARM: dts: qcom: ipq4019: Add SDHCI controller node")
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230811110150.229966-1-robert.marko@sartura.hr
Signed-off-by: Bjorn Andersson <andersson@kernel.org>