ARM: zynq: Convert Syzygy to DM_I2C

Boards have only one controller enabled that's why move to DM_I2C is
easy.
Add also i2c alias for not to be shown as i2c bus -1 because alias
doesn't exist.
Config file points to MAC stored in eeprom but it is not listed that's
why I have added 24c08 part.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/arch/arm/dts/zynq-syzygy-hub.dts b/arch/arm/dts/zynq-syzygy-hub.dts
index a30d667..55f8e8a 100644
--- a/arch/arm/dts/zynq-syzygy-hub.dts
+++ b/arch/arm/dts/zynq-syzygy-hub.dts
@@ -16,6 +16,7 @@
 		ethernet0 = &gem0;
 		serial0 = &uart0;
 		mmc0 = &sdhci0;
+		i2c0 = &i2c1;
 	};
 
 	memory@0 {
@@ -26,6 +27,7 @@
 	chosen {
 		bootargs = "";
 		stdout-path = "serial0:115200n8";
+		xlnx,eeprom = &eeprom;
 	};
 
 	usb_phy0: phy0 {
@@ -52,6 +54,10 @@
 
 &i2c1 {
 	status = "okay";
+	eeprom: eeprom@57 {
+		compatible = "atmel,24c08"; /* not sure if this is correct */
+		reg = <0x57>;
+	};
 };
 
 &sdhci0 {