arm64: dts: m3ulcb: enable I2C

This supports I2C2 bus on M3ULCB board
Signed-off-by: NVladimir Barinov <vladimir.barinov+renesas@cogentembedded.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

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

@@ -120,6 +120,11 @@
 		function = "scif_clk";
 	};
 
+	i2c2_pins: i2c2 {
+		groups = "i2c2_a";
+		function = "i2c2";
+	};
+
 	sdhi0_pins: sd0 {
 		groups = "sdhi0_data4", "sdhi0_ctrl";
 		function = "sdhi0";
@@ -182,6 +187,13 @@
 	clock-frequency = <14745600>;
 };
 
+&i2c2 {
+	pinctrl-0 = <&i2c2_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
 &wdt0 {
 	timeout-sec = <60>;
 	status = "okay";