arm64: dts: rockchip: Add sdmmc related properties on rk3308-rock-pi-s

Add cap-mmc-highspeed to allow use of high speed MMC mode using an eMMC
to uSD board. Use disable-wp to signal that no physical write-protect
line is present. Also add vcc_io used for card and IO line power as
vmmc-supply.

Fixes: 2e04c25b ("arm64: dts: rockchip: add ROCK Pi S DTS support")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20240521211029.1236094-5-jonas@kwiboo.seSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3308-rock-pi-s.dts

@@ -264,7 +264,10 @@ &sdio {
 };
 
 &sdmmc {
+	cap-mmc-highspeed;
 	cap-sd-highspeed;
+	disable-wp;
+	vmmc-supply = <&vcc_io>;
 	status = "okay";
 };