arm64: dts: renesas: r8a77990: ebisu: Enable HS400 of SDHI3

Enable HS400 of SDHI3 using the corresponding DT property.
No further changes are required.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts

@@ -695,6 +695,7 @@ &sdhi3 {
 	vmmc-supply = <&reg_3p3v>;
 	vqmmc-supply = <&reg_1p8v>;
 	mmc-hs200-1_8v;
+	mmc-hs400-1_8v;
 	bus-width = <8>;
 	non-removable;
 	status = "okay";