arm64: dts: r8a7796: salvator-x: enable HS200 for eMMC

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts

@@ -216,6 +216,7 @@ &sdhi2 {
 	vmmc-supply = <&reg_3p3v>;
 	vqmmc-supply = <&reg_1p8v>;
 	bus-width = <8>;
+	mmc-hs200-1_8v;
 	non-removable;
 	status = "okay";
 };