arm64: dts: qcom: sm6125-seine: Lock eMMC and SD Card IDs via aliases

Ensure the eMMC and SD Card always have a predictable slot index by
predetermining them via aliases.
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221222203636.250190-6-marijn.suijten@somainline.org

arch/arm64/boot/dts/qcom/sm6125-sony-xperia-seine-pdx201.dts

@@ -20,6 +20,11 @@ / {
 	compatible = "sony,pdx201", "qcom,sm6125";
 	chassis-type = "handset";
 
+	aliases {
+		mmc0 = &sdhc_1; /* SDC1 eMMC slot */
+		mmc1 = &sdhc_2; /* SDC2 SD card slot */
+	};
+
 	chosen {
 		#address-cells = <2>;
 		#size-cells = <2>;