arm64: dts: ulcb: Enable I2C for DVFS device

This enables I2C for DVFS device for ULCB 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/ulcb.dtsi

@@ -189,6 +189,10 @@ cs2000: clk-multiplier@4f {
 	};
 };
 
+&i2c_dvfs {
+	status = "okay";
+};
+
 &ohci1 {
 	status = "okay";
 };