ARM: mvebu: add I2C0 muxing option for Armada 370 SoC

This commit adds a pin-muxing configuration for the I2C0 bus of the
Armada 370, which is used on the Armada 370 DB platform to interface
with the CS42L51 audio codec.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/armada-370.dtsi

@@ -133,6 +133,11 @@ sdio_pins3: sdio-pins3 {
 					marvell,function = "sd0";
 				};
 
+				i2c0_pins: i2c0-pins {
+					marvell,pins = "mpp2", "mpp3";
+					marvell,function = "i2c0";
+				};
+
 				i2s_pins1: i2s-pins1 {
 					marvell,pins = "mpp5", "mpp6", "mpp7",
 						       "mpp8", "mpp9", "mpp10",