arm64: dts: renesas: rzg3e-smarc-som: Add I2C2 device pincontrol

Add a device node for I2C2 pincontrol.  Also enable the I2C2 device node
with 1MHz clock frequency as it is connected to the RAA215300 PMIC on
the RZ/G3E SoM.

Signed-off-by: John Madieu <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Geert Uytterhoeven <[email protected]>

Author: John Madieu

arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi

@@ -18,6 +18,7 @@
 	compatible = "renesas,rzg3e-smarcm", "renesas,r9a09g047e57", "renesas,r9a09g047";
 
 	aliases {
+		i2c2 = &i2c2;
 		mmc0 = &sdhi0;
 		mmc2 = &sdhi2;
 	};
@@ -51,7 +52,19 @@
 	clock-frequency = <48000000>;
 };
 
+&i2c2 {
+	pinctrl-0 = <&i2c2_pins>;
+	pinctrl-names = "default";
+	clock-frequency = <1000000>;
+	status = "okay";
+};
+
 &pinctrl {
+	i2c2_pins: i2c {
+		pinmux = <RZG3E_PORT_PINMUX(3, 4, 1)>, /* SCL2 */
+			 <RZG3E_PORT_PINMUX(3, 5, 1)>; /* SDA2 */
+	};
+
 	sdhi0_emmc_pins: sd0-emmc {
 		sd0-ctrl {
 			pins = "SD0CLK", "SD0CMD";