ARM: dts: i.MX51: Add i2c and spi aliases

This allows to order the i2c and spi devices correctly.
While at it reorder the aliases entries alphabetically.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx51.dtsi

@@ -15,13 +15,18 @@
 
 / {
 	aliases {
-		serial0 = &uart1;
-		serial1 = &uart2;
-		serial2 = &uart3;
 		gpio0 = &gpio1;
 		gpio1 = &gpio2;
 		gpio2 = &gpio3;
 		gpio3 = &gpio4;
+		i2c0 = &i2c1;
+		i2c1 = &i2c2;
+		serial0 = &uart1;
+		serial1 = &uart2;
+		serial2 = &uart3;
+		spi0 = &ecspi1;
+		spi1 = &ecspi2;
+		spi2 = &cspi;
 	};
 
 	tzic: tz-interrupt-controller@e0000000 {