arm64: dts: qcom: sdm845: Add XO clock to SDHCI

Add the missing XO clock to the SDHCI controller.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211002001358.45920-2-konrad.dybcio@somainline.org

arch/arm64/boot/dts/qcom/sdm845.dtsi

@@ -3493,8 +3493,9 @@ sdhc_2: sdhci@8804000 {
 			interrupt-names = "hc_irq", "pwr_irq";
 
 			clocks = <&gcc GCC_SDCC2_AHB_CLK>,
-				 <&gcc GCC_SDCC2_APPS_CLK>;
-			clock-names = "iface", "core";
+				 <&gcc GCC_SDCC2_APPS_CLK>,
+				 <&rpmhcc RPMH_CXO_CLK>;
+			clock-names = "iface", "core", "xo";
 			iommus = <&apps_smmu 0xa0 0xf>;
 			power-domains = <&rpmhpd SDM845_CX>;
 			operating-points-v2 = <&sdhc2_opp_table>;