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: 2e04c25b1320 ("arm64: dts: rockchip: add ROCK Pi S DTS support")
Signed-off-by: Jonas Karlman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Heiko Stuebner <[email protected]>

[ upstream commit: fc0daeccc384233eadfa9d5ddbd00159653c6bdc ]

(cherry picked from commit 39110e4bec51c9ce6bbd342234b288dbfccb9f80)
Reviewed-by: Kever Yang <[email protected]>

dts/upstream/src/arm64/rockchip/rk3308-rock-pi-s.dts

@@ -272,7 +272,10 @@
 };
 
 &sdmmc {
+	cap-mmc-highspeed;
 	cap-sd-highspeed;
+	disable-wp;
+	vmmc-supply = <&vcc_io>;
 	status = "okay";
 };