arm64: dts: m3ulcb: enable HS200 for eMMC

This supports HS200 mode for eMMC on M3ULCB board
Signed-off-by: Vladimir Barinov <vladimir.barinov+renesas@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts

@@ -209,6 +209,7 @@ &sdhi2 {
 	vmmc-supply = <&reg_3p3v>;
 	vqmmc-supply = <&reg_1p8v>;
 	bus-width = <8>;
+	mmc-hs200-1_8v;
 	non-removable;
 	status = "okay";
 };