arm64: dts: rockchip: add SD card support to rock-5a

Add sdmmc support for Rock Pi 5A board.
Signed-off-by: Lucas Tanure <lucas.tanure@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20230710165228.105983-7-sebastian.reichel@collabora.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts

@@ -188,6 +188,20 @@ &sdhci {
 	status = "okay";
 };
 
+&sdmmc {
+	bus-width = <4>;
+	cap-mmc-highspeed;
+	cap-sd-highspeed;
+	disable-wp;
+	max-frequency = <150000000>;
+	no-sdio;
+	no-mmc;
+	sd-uhs-sdr104;
+	vmmc-supply = <&vcc_3v3_s0>;
+	vqmmc-supply = <&vccio_sd_s0>;
+	status = "okay";
+};
+
 &spi2 {
 	status = "okay";
 	assigned-clocks = <&cru CLK_SPI2>;